Promoting her new role in "Bride Wars," she told Us magazine that she was way too thin when she got down to 133 lbs over the summer. The 41-year-old, six-foot-tall Johnston says her weight loss was caused by a burst ulcer. She's now gained back 20 lbs. "I'm at the weight that I should be," she says. "I've evened out now. It's a good weight for me."

Celeb Moms Lose Pounds	Real Moms Lose Pounds	Dangerously Thin