Kelly Preston hasn't being working out!

Kelly Preston hasn’t been hitting the gym since delivering son Benjamin Hunter Kaleo in November and insists she hasn’t been stressing out about losing the baby weight.

“I haven’t been working out. At all,” said Kelly, who’s married to John Travolta.

“Maybe that’s the secret. Don’t stress about it!

“I’ve been lucky because I’ve been breastfeeding so that’s really helped me lose the weight,” she says. “That really is the secret.

“It certainly would be better if I started to exercise, but I had a c-section so my stomach muscles weren’t very strong.

“I wanted to do some dance classes but it was a little too much. I was down for the count!”