It is a possiblity she had a child during her "hiatus"...though I know for a fact that very few women can bounce back to their orignal figure after having a child...in most cases there bodies change permanetly in one why or another..(booty,hips, stomach, breasts-if-they-are-real in particular) also the ol snatch....though hers seems the same...then again she only started showing in her later pics just prior to her leave of absence...so hard to say...
Have to take a closer look at the stomach first....stretch marks are very hard to cover even after several months to a year...