Lily Allen welcomes a baby girl!

Lily Allen gave birth to her second child on Tuesday, according to reports - but what did she name her?

Lily Allen and husband Sam Cooper have welcomed a baby girl, according to reports.

The songstress, who often goes by her married name of Lily Cooper, is thought to have welcomed her second child on Tuesday, with the couple said to be 'ecstatic' at the news.

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And what have they named their adorable new addition? Reports suggest the pair have chosen Marnie Rose for their second born.

The tot will join the couple's first daughter Ethel, born in 2011.

One insider told the Sun: 'Marnie is a real cutie. Sam and Lily are ecstatic about adding another girl to the family.

'A little sister for Ethel is brilliant news to lift the January blues for the family.'

Lily has been keeping fans up to date on her baby news via Twitter, writing on January 4: '3rd curry this week... cosywomb.'

Lily Allen and Sam Cooper announced they were expecting their first child at their Cotswolds wedding in June 2011, with the delighted groom reportedly confirming the happy news during the reception, and telling guests Lily was 12 weeks into her pregnancy.

Congratulations to the happy couple!

WATCH: Behind the scenes with Lily Allen on Lucy In Disguise shoot...

What do you think of Lily Allen's baby name? Let us know in the comments box below..

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