Lily Allen welcomes daughter Marnie Rose

Copyright 2011 Pascal Le Segretain / Getty Images

Lily Allen, 27, is a mom again! The British singer welcomed daughter Marnie Rose on Tuesday, January 8, People is reporting.

This is Allen's second child with her husband Sam Cooper. Marnie Rose will join older sister Ethel Mary, 1.

Related: Lily Allen is Pregnant

"Quite overwhelmed by all the well wishing going on. THANKYOU everybody x x x," she tweeted Thursday morning.

Allen has been previously open about the two miscarriages she suffered prior to giving birth to Ethel Mary on Nov. 25, 2011.

"It was a really long battle, and I think that kind of thing changes a person," Allen said in her documentary Lily Allen: Rags to Riches.

Related: Lily Allen Welcomes a Baby Girl

The Smile singer again made headlines in June with rumors of her return to music after announcing in 2010 that she was taking a break to focus on her fashion store and personal life.

"You will be pleased to know that i am currently in the f***ing studio with [producer] @GregKurstin," Allen tweeted.