Hilary Duff carried her son, Luca Comrie, to Babies First Class in LA yesterday. The active mom is back to running errands with Luca after traveling to Indio, CA, over the weekend with her husband, Mike Comrie, and older sister, Haylie Duff, for Coachella . Fresh off her festival getaway, Hilary has jumped onto promotional duties for the latest and final installment of her Elixir trilogy, True . On Tuesday, she signed hardcover copies of her fictional love story, which was officially released the same day, at a local book shop in La Verne, CA. The multitalented star took to Twitter to share her gratitude: "Great night...Thank you to all my loyal and devoted fans. You guys mean so much to me!" While Hilary soaks in the success of her trilogy's conclusion, she also has a small-screen moment to look forward to. Hilary will guest-star as Ashton Kutcher 's onscreen girlfriend on the season finale of Two and a Half Men , which airs May 9.

By Daily Mail Reporter PUBLISHED: 18:20 EST, 17 April 2013 | UPDATED: 18:20 EST, 17 April 2013 Between swaying to the Coachella set list over the weekend and launching her third novel on Tuesday, Hilary Duff keeps a busy schedule. But after embracing her youthful side in the Californian desert and then putting on her author hat, the 25-year-old was more than thrilled to focus her attention on her true love - her son Luca Cruz. The former Disney star took her one-year-old to baby class in Sherman Oaks, California, on Wednesday morning. My son-shine: Hilary Duff beamed as she held her one-year-old son Luca Cruz snugly in her arms on Wednesday morning in Sherman Oaks, California The mother-son duo looked quite the stylish pair. Hilary wore skinny grey jeans that showed off her toned, trim legs, the ankle of which she rolled to meet the top of her camel-coloured booties. A sharp black blazer covered a loose grey T-shirt - an outfit that was ready for business or play. Keeping a playful ...

By Daily Mail Reporter PUBLISHED: 01:25 EST, 17 April 2013 | UPDATED: 02:30 EST, 17 April 2013 She's one of the most high-profile former child stars in Hollywood. But Hilary Duff is also an author, and she was busy promoting her latest book - True - at a children's store in California on Tuesday. The 25-year-old, who is rarely spotted out and about without her one-year-old tot in tow, beamed as she proudly held up a copy of her tome at Mrs Nelson's Toy & Book Shop in La Verne. Check her out! Hilary Duff looked stunning in leather trousers as she signed copies of her book True in La Verne, California on Tuesday The Lizzie McGuire actress showed off her incredible figure in leather trousers and a black sweater paired with fawn pumps. A red fedora nestled jauntily on her head. True is the final installment of Duff's Elixir trilogy. Radiant: Hilary's trilogy has been a big hit with young fans Multi-talented: Hilary enjo! yed signing copies of her book for her a...

New mom Hilary Duff, 25, is returning to television as Ashtons Kutchers love interest on the season finale of Two and a Half Men. Too bad he falls for someone else! Getty Images TVLine first reported the casting news, explaining that Duffs character has a love connection with Walden (Kutcher). E! News later added that the two dont end up together, because Walden falls for Staceys grandmother! Taxi and Celebrity Apprentice star Marilu Henner, 60, will play the older woman who steals his heart. Duff confirmed the news via Twitter on Tuesday, writing, So excited to be joining the cast of @TwoHalfMen_CBS this week! I get to play a crazy drunk girl, funnnn!!!... So lucky and excited to work with the beautiful & talented @TheRealMarilu on @TwoHalfMen_CBS this week! Today was a blast! Tune in to CBS for the Two and a Half Men finale Thursday, May 9 at 8:30 PM.

Coachella attracts fans from far and wide, including celebrities. Check out the famous faces spotted at the festival this year. [ View the story "Spotted: Celebrities at Coachella " on Storify ] Storified by Fri, Apr 12 2013 20:12:50 "WE'RE BACK BITCHES!" Coachella 2013. I forgot to breathe. pic.twitter.com/Kd2e1YjqFm ips r Katy in Coachella pic.twitter.com/xiVFp93oyJKatyCat #coachella #coachella #coachella RT @robbannasophia #coachella @alexandramccall @chloebridges whomp whomp instagram.com/p/YBXAJNtooP/Chloe Bridges Just a little celeb wrangling moment. Working hard at #coachella #missguided #peoplesrevteam #johnross #dallasKali Goodwin [PHOTO] @VanessaHudgens at #Coachella #Beautiful pic.twitter.com/ZJNZ6uVY3LTe amo, Vanessa Just met the beautiful @AngelAlessandra #omg !!! #victoriassecretmodel @ Coachella Outdoor Theatre instagram.com/p/YB3JZIkYK6/Alyssa Johnson I sure know how to party, huh? #UpInTheAir at #Coachella. #ArtWorkDreamsLife instagram.com/p/YB...

New mom Hilary Duff, 25, is returning to television as Ashtons Kutchers love interest on the season finale of Two and a Half Men. Too bad he falls for someone else! Getty Images TVLine first reported the casting news, explaining that Duffs character has a love connection with Walden (Kutcher). E! News later added that the two dont end up together, because Walden falls for Staceys grandmother! Taxi and Celebrity Apprentice star Marilu Henner, 60, will play the older woman who steals his heart. Duff confirmed the news via Twitter on Tuesday, writing, So excited to be joining the cast of @TwoHalfMen_CBS this week! I get to play a crazy drunk girl, funnnn!!!... So lucky and excited to work with the beautiful & talented @TheRealMarilu on @TwoHalfMen_CBS this week! Today was a blast! Tune in to CBS for the Two and a Half Men finale Thursday, May 9 at 8:30 PM.

Hilary Duff's post-baby body is bananas. The 25-year-old showed off her incredibly toned legs while enjoying a night out at Mercato Di Vetro with husband Mike Comrie in West Hollywood on April 6. Dressed in super-short shorts, a green blazer and nude heels, Duff proved that her body is back and better than ever after giving birth. @ mrflowers25 aka Larry...Mikey and I dattttte twitter.com/HilaryDuff/sta Hilary Duff (@HilaryDuff) April 7, 2013 Duff, who welcomed son Luca Cruz in March 2012 , has been open about her workout routine since becoming a mom. And obviously her exercise plan is working -- she recently squeezed herself into a size 26 skinny jean . "I think if you ask any pregnant mom, they're like! 'I want my body back,' but it takes time," she told Us Weekly recently. "It takes nine months for your body to get that way and it's putting ...

09 APRIL 2013 He has trained Kim Kardashian , Megan Fox , Hilary Duff and Katy Perry , who, star trainer Harley Pasternak says, are "all fun to work with, all very motivated as they make a living based on how they look. "All my clients want to get red-carpet-ready and looking great very quickly this week." Kim Kardashian , 32,has said "I live for Harley's smoothies!" They taste incredible!" And now we can taste them and get red-carpet-ready in record time, thanks to the famous fitness guru's new diet book, where he focuses on super healthy smoothie recipes and actually tells us to exercise not more, but less. CLICK ON PHOTOS FOR FULL GALLERY Harley exclusively explains to HELLO! Online that Kim tried and loved the smoothie diet from his new book The Body Reset Diet . "She can still incorporate the smoothies into her daily routine and get the! nutrients in her body even while she's pregnant". As the diet promotes short daily...

Hilary Duff's post-baby body is bananas. The 25-year-old showed off her incredibly toned legs while enjoying a night out at Mercato Di Vetro with husband Mike Comrie in West Hollywood on April 6. Dressed in super-short shorts, a green blazer and nude heels, Duff proved that her body is back and better than ever after giving birth. @ mrflowers25 aka Larry...Mikey and I dattttte twitter.com/HilaryDuff/sta Hilary Duff (@HilaryDuff) April 7, 2013 Duff, who welcomed son Luca Cruz in March 2012 , has been open about her workout routine since becoming a mom. And obviously her exercise plan is working -- she recently squeezed herself into a size 26 skinny jean . "I think if you ask any pregnant mom, they're like! 'I want my body back,' but it takes time," she told Us Weekly recently. "It takes nine months for your body to get that way and it's putting ...

Splash News Actress Hilary Duff was spotted enjoying the sunshine whilst spending some quality time with her baby son Luca. The actress has announced that she will be appearing alongside Ashton Kutcher in the season finale of Two and A Half Men. Hilary appeared to be glowing as she spent some quality time with her baby son Luca at the Coldwater Canyon Park. Hilary Duff disappeared from our televisions to look after her baby son , for the first time since his birth, she's set to return to the small screen once again. Whilst most would recognise her as Lizzie Maguire from the hit Disney TV Show, she is set to appear as Ashton Kutchers latest love interest in the hit comedy series Two and A Half Men. PHOTOS: Hilary Duff With Baby Luca Ahead Of Appearance With Ashton Kutcher On Two And A Half Men Hilary Duff and baby Luca enjoy the sunshine (SPLASH) The star took to Twitter to share with her fan the exciting news. So excited to be joining the cast of @TwoHalfMen_CBS this week! I get to...

New mom Hilary Duff, 25, is returning to television as Ashtons Kutchers love interest on the season finale of Two and a Half Men. Too bad he falls for someone else! Getty Images TVLine first reported the casting news, explaining that Duffs character has a love connection with Walden (Kutcher). E! News later added that the two dont end up together, because Walden falls for Staceys grandmother! Taxi and Celebrity Apprentice star Marilu Henner, 60, will play the older woman who steals his heart. Duff confirmed the news via Twitter on Tuesday, writing, So excited to be joining the cast of @TwoHalfMen_CBS this week! I get to play a crazy drunk girl, funnnn!!!... So lucky and excited to work with the beautiful & talented @TheRealMarilu on @TwoHalfMen_CBS this week! Today was a blast! Tune in to CBS for the Two and a Half Men finale Thursday, May 9 at 8:30 PM.

Hilary Duff carried Luca, who rested his head on his mom's shoulder, in her arms as she ran errands around LA yesterday. She's been focusing much of her attention on her little man recently, especially since his exciting milestone. Luca turned 1 last week, and he celebrated by attending a Babies First Class in LA with Hilary . The proud mom was also sure to have a standout cake, which seemed to be a highlight of the festivities. Hilary shared a picture of the robot confection on her Twitter account, saying, "Thank you Duff's cake mix for the coolest 1 year old's robot birthday cake ever! It was a big hit!"

Hilary Duff sent Perez Hilton a hamper packed with her favourite baby products when his son was born The gossip blogger recently announced the birth of his first child via surrogate and was touched when Hilary - who has son Luca, 11 months, with husband Mike Comrie - reached out to him. Speaking at his 35th birthday celebration at the El Rey Theatre in Los Angeles, Perez exclusively told BANG Showbiz: 'Hilary Duff sent over a gift basket with some of her favourite baby things. She is so sweet and it was such a nice thing for her to do.' Perez loves fatherhood but admitted keeping his surrogate's pregnancy a secret was difficult. He explained: 'Fatherhood is so wonderful. The pregnancy was a hard thing to keep secret but because I am such a polarising figure I was worried for the surrogate's safety so I decided to keep it a secret until the baby was born. 'I've been getting some tips from my mom but mainly I've just been listening to the baby. He lets me ...

People News Mar 24, 2013, 17:01 GMT Hilary Duff with her son Luca Hilary Duff sent Perez Hilton a basket full of her favourite baby products when his son was born. The gossip blogger recently announced the birth of his first child via surrogate and was touched when Hilary - who has son Luca, 11 months, with husband Mike Comrie - reached out to him. Speaking at his 35th birthday celebration at the El Rey Theatre in Los Angeles, Perez exclusively told BANG Showbiz: 'Hilary Duff sent over a gift basket with some of her favourite baby things. She is so sweet and it was such a nice thing for her to do.' Perez loves fatherhood but admitted keeping his surrogate's pregnancy a secret was difficult. He explained: 'Fatherhood is so wonderful. The pregnancy was a hard thing to keep secret but because I am such a polarising figure I was worried for the surrogate's safety so I decided to keep it a secret until the baby was born. 'I've been getting some tips from my mom b...