Star dismisses rumours she has a bun in the oven

Christina Aguilera is having oodles of fun dispelling rumours she’s up the duff.

The singer, 26, downed heroic amounts of bubbly recently at an after-party for her gig at LA’s Hyde Lounge.

She explained the purpose of her booze bender – to prove she’s not carrying husband Jordan Bratman’s baby.

‘When I say I’m pregnant, people don’t believe me,’ she insists, according to the Daily Star. ‘The only way to shut people up is to drink lots of alcohol in public. When I show them my flat tummy, they don’t believe me.’