See Stars' Slim-Down Superfoods

HILARY DUFF

The new mom, who gave birth to son Luca in March, is getting back in shape with the help of celebrity trainer and PEOPLE.com blogger Harley Pasternak and his recipe for frosty red berry smoothies, which she tweeted "is doin me right!" in October. Another fave: sister Haylie's sunny side up egg over a bed of greens, which prompted Duff to rave, "Love it so much when haylieduff sleeps over and cooks me breakie!"