It looks like 2012 is shaping up to be the year of babies. A slew of some of the most fashionable celebrities are expecting this year. One would think a baby bump might obstruct fashion choices; alas, that is not the case with these style divas. In fact, with that pregnancy glow, they look more gorgeous than ever. 

Actress Hilary Duff is expecting her first child with husband Mike Comrie in March. The couple announced the good news in August, on the date of their one-year anniversary. We also want to share the exciting news that... Baby Makes Three!!! We are extremely happy and ready to start this new chapter of our lives, the 24-year-old beauty wrote on her official Web site. Duff has been photographed in Beverly Hills looking as gorgeous as ever. She wears everything from six-inch stilettos to skin-tight dress to skinny jeans. 

Alessandra Ambrosio is pregnant with her second child with longtime fiance Jamie Mazur. The supermodel was even pregnant when she strutted down the runway at the annual Victoria's Secret Fashion Show in Dec. 2011. At the time, her pregnancy was a secret. Everyone was shocked to hear the news.

When I first found out I was pregnant I thought, 'Oh my gosh I don't think I'm going to be able to walk on the show,' and I didn't tell anybody so no one knew at the show that I was pregnant, the Victoria's Secret Angel, 30, told Us Weekly. A week before, I told my booker I don't think I'm going to be able to fit into the clothes because I gained a few pounds already, but we were just quiet. I cut all the sugars and sweets 10 days before and I got my trainer -- the one I usually get -- and we were doing lots of glutes and arms and back exercises.

Another daring mommy-to-be is Jessica Simpson. The blonde bombshell is pregnant with her first child with boyfriend Eric Johnson and is still rocking stilettos and designer duds. I went to the doctor yesterday and he said, 'You're gonna need to get out of those heels!' I was like, 'Excuse me! I'll be delivering in these heels! she said. Simpson has most recently been promoting her new NBC TV show, Fashion Star.

Real life has inspired the mogul to develop her own maternity line, which is expected to hit shelves in Feburary. It's really challenging to find adorable stuff. And fashionable stuff and stuff that doesn't make you look like a house, she told E! News. You want stuff that's flattering to your bump; you want to show your bump off. We're going to come out with some really great stuff. Lots of cute denim for all the ladies out there who are afraid to get dressed up pregnant.

Check out some of the most fashionable celebrities expecting in 2012.