It’s going to be a girl for Molly Sims! The pregnant model-actress revealed her baby-to-be’s gender on her blog Monday, gushing that she and hubby Scott Stuber are “tickled pink” their 2-year-old son Brooks is going to have a little sister. The 39-year-old old star, whose book The Everday Supermodel comes out Tuesday, shared some cute snaps of herself holding lots of pink ballons. Back in October, she told People she couldn’t wait to find out baby No. 2’s gender.