Christina Aguilera sported some serious new curves in LA on Saturday (above left), hinting at a surprising flux in weight over a short period of time. The singer was significantly slimmer as recently as June, and noticeably so compared to her January red carpet appearance at the Golden Globe Awards (above right).

"She now has a much curvier physique and fuller face, appearing to be the heaviest she's ever been, barring her pregnancy in 2008," writes The Daily Mail. Xtina is preparing for the November release of her film debut, 'Burlesque,' co-starring Cher, Eric Dane and Stanley Tucci.