Kelly Clarkson is expecting a baby girl.

The 'Since U Been Gone' singer confirmed she is having a daughter with husband Brandon Blackstock this morning (20.01.14).

She wrote on Twitter: ''We just found out we're having a girl officially! I knew it! Only a girl could cause this much drama with all this vomiting ha! (sic)''

Kelly - who is four months pregnant - has previously tweeted about her battles with morning sickness, writing: ''Ladies if you r pregnant & sick as a dog trust me when I say the one thing u will keep down might just be ''baked potatoes'' #godblesspotatoes (sic)''

She also wrote alongside a picture of her dogs: ''Didn't throw up once from pregnancy while walking my dogs #smallvictory #TMI (sic)''

Kelly, 31, has also previously said she hopes her baby is ''chunky'' because she thinks it is cute.

She said: ''I want chunky babies. I just love chunky babies. I want to bite their chunky arms and thighs. They're just so cute!''

Kelly and Brandon - who also has children Savannah, 12, and Seth, seven, from a previous relationship - have got some names in mind for their young one, but won't say whether they will be traditional or modern.

She added: ''We're going with a little bit of both. We're keeping it in the family, but also doing something cool for us.''