Jennifer Aniston Fakes Pregnancy In New SmartWater Ad* (VIDEO)

Jennifer Aniston Is Pregnant* (VIDEO)

(*not strictly true) but Jennifer Aniston HAS donned a fake baby bump for a new ad that takes the mickey out of the constant rumours she is pregnant.

In 'stolen' security camera footage from the former Friends star's home, the 'truth' is revealed - she straps her baby bump down with the help of a pull-in belt.

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She also puts the record straight on her workout routine, as the 'footage' shows her being lifted by a group of hunky men and also reveals that her trademark Rachel 'do is actually a wig.

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The spoof tape - to promote SmartWater, which Jen is the face of - reminds us exactly why we first fell in love with the star - the ability to take the mickey out of herself.

She's faced constant speculation about whether she is expecting her first child since she began dating Justin Theroux, who she got engaged to last month.

Most recently the National Enquirer reported that she was planning a shotgun wedding in Mexico after falling pregnant, which she was forced to deny.

"It's all just another fabrication," she told E! news.

> IN PICS: JENNIFER ANISTON'S STYLE EVOLUTION

Jennifer Aniston
1998(01 of17)
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Jennifer Aniston wears a white t-shirt, black blazer and flat cap on backwards. (credit:Getty Images)
1998(02 of17)
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Jennifer Aniston wears a full length figure hugging dress. (credit:Getty Images)
1999(03 of17)
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Actress Jennifer Aniston wears a gown with detailed top for the Emmy Awards. (credit:Getty Images)
2001(04 of17)
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US actress Jennifer Aniston arrives at the premiere of Snatch wearing a khaki green scarf and white t-shirt with a brown leather jacket and jeans. (credit:Getty Images)
2002(05 of17)
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Actress Jennifer Aniston arrives with then husband Brad Pitt at the Golden Globe Awards. She wore a blazer jacket with short necklace. (credit:Getty Images)
2002(06 of17)
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Jennifer Aniston wore a pink embellished gown at the Emmy Awards. (credit:Getty Images)
2002(07 of17)
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Brad Pitt and Jennifer Aniston at the premiere of The Bourne Identity. She wears a loose navy top. (credit:Getty Images)
2002(08 of17)
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Actress Jennifer Aniston wears casual cargo trousers with a navy vest. (credit:Getty Images)
2002(09 of17)
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Actress Jennifer Aniston wears a floral dress over black trousers. (credit:Getty Images)
2003(10 of17)
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Jennifer Aniston wears a floor-length dress with cut-out detail. (credit:Getty Images)
2004(11 of17)
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Actress Jennifer Aniston wears a strapless cream dress with embellished detail. (credit:Getty Images)
2004(12 of17)
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Actress Jennifer Aniston wears a simple black dress. (credit:Getty Images)
2007(13 of17)
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Actress Jennifer Aniston wears a cream dress. (credit:Getty Images)
2010(14 of17)
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Jennifer Aniston launches her debut fragrance wearing a short strapless cream dress. (credit:Getty Images)
2011(15 of17)
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Actress Jennifer Aniston wears a printed dress with black tights and shoes. (credit:Getty Images)
2012(16 of17)
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Actress Jennifer Aniston arrives at the premiere of Wanderlust wearing a fitted dress. (credit:Getty Images)
2012(17 of17)
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Jennifer Aniston wears a floral dress on the Hollywood Walk Of Fame. (credit:Getty Images)