Life's not fair. (Mom)

So here's a daily dose of injustice for you. Alessandra Ambrósio and Lily Aldridge were both pregnant when they pranced down the Victoria's Secret Fashion Show runway in lingerie in early November. Not only were their faces glowing more than usual, but their physiques looked absolutely stunning- to the point that no one could tell either was with child.

On Wednesday, People confirmed that 30-year-old Ambrósio is expecting her second child with fiancé Jamie Mazur, and is four months along in her pregnancy. Which means that when she walked in the show, she was approximately two months pregnant. The supermodel also has a 3-year-old with Mazur, and uploaded a facebook photo with her daughter on Thursday morning.

The image of the bikini-clad mommy and daughter was accompanied by a note, which read, "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!!" It has about 2,000 likes already.

As for Aldridge, E! reports that the supermodel is three months pregnant with Kings of Leon husband Caleb Followhill.

Pregnancy clearly treats these ladies, well. Congratulations to both couples!

View photos of the two on the runway, here