Alessandra Ambrosio Turns 31 Today! Celebrate With Her Best Bikini Looks (PHOTOS)

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Alessandra Ambrosio is quite the birthday babe, indeed. 

The sultry and sexy Victoria’s Secret model has made her mark on and off the runway, and now, she’s welcoming baby No. 2. The supermodel announced the news this past December on her Facebook, writing

“Anja, Jamie and I are overjoyed and extremely appreciative of all the wonderful wishes we’ve received!! 2011 has been a year filled with incredible gifts and this is the ultimate blessing!! Anja has filled our lives with love and we can’t wait to welcome the new baby into the family this spring!!”

In celebration of the VS model, click the pics to see her sexiest bikini-clad styles, and feel free to leave a few birthday wishes in the comments. 

If Alessandra’s bikini looks aren’t enough for you on this hump day, check out some of the hottest swimsuit styles of Victoria’s Secret’s angels, below: