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OTRC: Stacy Keibler displays six-pack abs amid pregnancy rumors (Photo)

Stacy Keibler appears in a photo she posted on her Instagram on June 21. (Instagram / Stacy Keibler)

Stacy Keibler posted a photo showing off a set of manicured six-pack abs, dismissing rumors that she's carrying boyfriend George Clooney's child.

The 32-year-old former WWE wrestler recently made an account on the popular photo sharing app Instagram, and posted a photo of herself putting her toned abs on display in a white sports bra and black workout pants. The model, dumbbell in hand, can be seen smiling and flexing her muscular arms in a gym (See above).

"I am officially on Instagram! :)" she Tweeted on June 21, with a link to the photo.

Keibler and Clooney, 51, have been dating for ten months. The model has not yet addressed the pregnancy rumors herself.

The couple recently took breaks from their busy social lives to vacation at the Oscar winner's villa in Lake Como, Italy. The couple spent a few days in Cabo San Lucas, Mexico before flying to Clooney's lakeside home in Northern Italy.

The 51-year-old actor bought the 30-bedroom villa in 2002 and has hosted many of his Hollywood friends at the estate over the years. Clooney and Keibler reportedly spent time together at the Lake Como villa last August.

Clooney has been fundraising for President Barack Obama's re-election campaign, recently raising $15 million at an event held at the actor's Hollywood home.

Clooney and Elisabetta Canalis, a 32-year-old Italian actress and model who appeared in the 2005 comedy film "Deuce Bigalow: European Gigolo," announced in June 2011 that they had broken up after dating for about two years. Keibler and "7th Heaven" actor Geoff Stults split in 2010.

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