Hilary Duff shows off bikini bod while holding son Luca

Shara Purcell

New mom Hilary Duff showed off her post-baby bikini bod on Wednesday while holding her 3-month-old son Luca during a vacation in Mexico with the fam. Check out the pics! Also on Wednesday, Miley Cyrus stepped out with fiance Liam Hemsworth sporting quite a sexy ensemble, and Kendall and Kylie Jenner are writing a book.

Check back weekdays at 12 p.m. PT

More Celebrity Features on Yahoo!: