How long does a new mother get to lose the baby weight before people start, you know, talking?

There’s no official deadline, but one thing’s clear: She gets less time than she used to, thanks to standards set by a new crop of celebri-moms like Jennifer Lopez, who give birth one day and seem to appear on the red carpet the next -- rested, radiant, and toned.

Take a look at these celebrities and their transitions back from the baby weight.

At left, a photo of Halle Berry.