In the March issue of GQ, the actress Jennifer Aniston, who just turned 43, adds another tactic to her arsenal - showing off her amazing rock-hard abs in a fun photo shoot with Paul Rudd, her co-star in the upcoming comedy "Wanderlust."

"I'm not having triplets. Not having twins. Nor am I having one baby," she says in the interview while lifting up her sweater and pointing to her super-flat belly. "I did not elope."

Aniston is referring to recent rumors that she's expecting twins and she thinks she knows how it got started. "Well, I recently quit smoking, and you do put on some extra pounds. It makes a difference, especially if you're not 20," she explains, not that she appears to be an ounce overweight. "I think people maybe want me to have a kid now."

The former "Friends" star will forever be linked in the media to ex-husband Brad Pitt. She has been dating actor Justin Theroux since last spring. Though Aniston and Theroux met while filming "Wanderlust" - the flick she's busy promoting with Rudd - she doesn't address her beau in the interview except to say "We got a dog."

"I still kind of go with, if it happens, it happens. I'm calm and peaceful with whatever the plan is.

It's not something where I'm going, 'I gotta have a kid!" she says in the interview.