Hope baby Luca didn't get too freaked out! Hilary Duff and husband Mike Comrie were among the celebs at Mike Meldman's Friday Oct. 26 Halloween bash in Beverly Hills. The singer-actress, 25, and the NHL star, 32, left their son Luca, 7 months, at home for the grown-up dress up party -- where the spouses of two years donned creepy, elaborate skeleton makeup in tribute to Da de los Muertos (Mexican Day of the Dead). PHOTOS: Hilary's new life as a mom "Yaaaaa! Day of the dead crazy! Thanks startupchime," the She Wants Me actress tweeted before heading out. PHOTOS: What's Hilary's political affiliation? Duff wasn't the only one turning heads at the bash, also attended by Seal (and a mystery date ) Emma Roberts ( dressed as her Aunt Julia! ), Paris Hilton, Hilary Duff and husband Mike Comrie, Rosie Huntington-Whitely , Ryan Seacrest and girlfriend Julianne Hough , Cindy Crawford and Rande Gerber, Dax Shepard and fiancee Kristen Bell , Chris M! a...