London, Jan 14 : Lily Allen recently gave a slip to her strict diet to enjoy a boozy night out with friends.

The singer, who is trying every trick in the book to get in shape for the launch of her second album next month, has chucked alcohol and has even turned to the late Bob Marley for inspiration on keeping trim.

However, the 23-year-old star's diet got a big knock on January 12, when she ended up on a massive booze binge.

In fact, the starlet walked home the next day, wearing the same clothes from the night before, reports The Mirror.

He partying started sensibly though-Lily made a trip to the healthy Nobu restaurant on London's Park Lane with pal Miquita Oliver.

Later, the girls headed to the exclusive Groucho club in Soho, where the `Smile' hitmaker went through several fagging and drinking rounds.

At closing time, she got a call on her BlackBerry, and they jumped in a cab to continue the party.

Lily's new album `It's Not Me It's You' is out next month. (ANI)