Imogen Thomas has given birth to a baby girl.

The brunette beauty, 30, and her boyfriend Adam Horsley welcomed daughter Ariana Siena into the world at 10.45am this morning (11.02.13) at London's Chelsea and Westminster Hospital, and the reality TV star and her newborn, who weighed 6lb 2oz, are ''doing really well''.

A spokesman told MailOnline: ''Mother and baby are doing really well and are both healthy.''

Imogen is said to be delighted she has given birth to a baby girl, who was delivered by a planned Caesarean section after doctors discovered her baby was in breech.

The spokesperson added: ''Imogen is pleased as she wanted a daughter.''

The former 'This Morning' presenter - whose world was turned upside down when her alleged affair with footballer Ryan Giggs was exposed in 2011 - recently revealed she had scheduled a Caesarean section, but she had ''mixed emotions'' about not being able to give birth naturally.

She tweeted: ''My date is booked for a c section! Eeekks! Nervous excited mixed emotions! Can't wait to meet my baby xxxxxxxxxxxxx. (sic)''

After being criticised for her decision by several Twitter users, she took to the social networking site to reveal she was planning to have a caesarean for medical reasons.

She tweeted: ''For those of u criticising me for having a c sec...the doctor says I have to as my stomach muscles r too strong to turn baby. (sic)''