Kelly Osbourne wore a back brace and needed to use the toilet at the Grammy Awards which left people speculating she could be pregnant.

The 'Fashion Police' host took to her Twitter account to clarify she was certainly not sporting a baby bump under her Christian Siriano gown on the red carpet last night (08.02.15) but may have been looking slightly bloated because she really needed to use the facilities.

The 30-year-old star - who teamed the monochrome, spotted gown with a koi carp-shaped clutch - wrote: ''NO IM NOT PREGNANT YOU F**KERS! I have a back brace on AND I REALLY NEED TO TAKE A S**T! #SuckIt (sic)''.

Several Twitter users had taken to the social networking site earlier in the evening to predict she was expecting after seeing the dress she was wearing at the Los Angeles Staples Center.

ILanGyul wrote: ''I hope @KellyOsbourne is pregnant. If not!?, sorry That dress is a no no. #GRAMMYs (sic)''

stephanieterps tweeted: ''Is kelly osbourne pregnant or just hefty? That dress looks horrible on her (sic)''

Chae_FBaebee wrote: ''Kelly Osbourne looks pregnant''

The TV personality had previously shared a ''sneak peak'' of her gown on her Instagram account, as well as a behind-the-scenes shot of her being attended to by two make-up artists.

The purple-haired star wrote: ''#SneakPeekOfMyDress @csiriano #Grammys #ERedCarpet #LRC''

''In hair & make up almost ready to hit the #ERedCarpet #Grammys #LRC who's gonna be watching? (sic)''