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Lily is all Smiles as she tells the world she's expecting first child

Pop singer Lily Allen and boyfriend Sam Cooper are expecting their first child, it was revealed today.

A recent scan revealed the chart topper (25) was three months' pregnant, she told The Sun.

The star told the paper: "It brings me great pleasure to tell you that Sam and I are expecting our first child. It goes without saying that we are both absolutely delighted."

Allen, daughter of comedian and actor Keith Allen, started dating her builder boyfriend (32) last summer.

Her pregnancy follows numerous hints that she was retiring from pop music, but last month she took to the stage at London's Wireless Festival, providing support for US rap superstar Jay-Z.

This year she has also been busy setting up a vintage clothing line, Lucy In Disguise, with elder sister Sarah Owen.

Her pop career has seen her notch up two best-selling albums, Alright, Still and It's Not Me, It's You, as well as number one singles The Fear and Smile.

In January 2008 Allen suffered a miscarriage after becoming pregnant by Ed Simons, one half of dance duo the Chemical Brothers.