Lily Allen is on a "total high" since the birth of her baby daughter, says a source.

The British star gave birth to Ethel Mary in November.

Lily has suffered with depression in the past, and was worried about how a little one would affect her lifestyle.

However, sources close to star says her worries were unfounded.

"Lily can't believe how perfect things are. She was anxious she might get post-natal depression because of her history, but despite being exhausted, she's on a total high," a friend of the star told British magazine Closer.

Lily is reportedly keen to drop the extra pounds she gained while pregnant. The 26-year-old songstress doesn't want an extreme diet and exercise plan though.

"Lily ate well during her pregnancy and didn't go on a diet the minute she gave birth like a lot of celebs," the insider said.

"She never wanted to do a hardcore weight-loss regime, but she's starting to think she's got no choice. Yet she's saying she'll ease' herself into it."