Jennifer Aniston thinks she has gained ''a couple of pounds.''

The 44-year-old actress, who is well known for her love of yoga and healthy eating, believes her slightly curvier figure is the reason she keeps getting asked if she is pregnant and is worried that the constant speculation about her personal life will spoil her upcoming wedding or any baby news in the future.

The 'We're the Millers' actress, who is engaged to Justin Theroux, said: ''It does feel a bit like they've exhausted the question, and also the speculations. It's all been pretty much exhausted. Why not just wait until we actually get to have the fun of announcing something, who wants to play the guessing game, whether it be (a) family, wedding, this, that, the other thing.''

She told 'The Kyle and Jackie O Show' in Australia on Monday (12.08.13) that the pregnancy rumours surrounding her of late are merely a result of her gaining ''just a couple of pounds.''

Jennifer also poked fun at suggestions that Justin's 42nd birthday bash on Saturday (10.08.13) at their Bel Air mansion in Los Angeles was actually their wedding reception, saying: ''Apparently there was a secret one this weekend.''

The actress and her fiance were joined by 75 guests, including Ellen DeGeneres, Ben Stiller, Jimmy Kimmel, Tobey Maguire, Laura Dern, John Krasinski, Don Cheadle and Jason Bateman, for the lavish party at their newly renovated $21 million home.