I know motherhood can cause some to gain and keep weight.  And we all gain some as we age.  But Christina was slender for such a long time.  And then, all of a sudden, boom!  She's a lot more hefty than she's ever been.  And here comes Thanksgiving, Christmas & the New Year.

http://www.dailymail.co.uk/usshowbiz/article-2064114/Christina-Aguilera-AMAs-2011-hits-bum-fashion-note-spills-bandage-dress.html