Lily Allen returns to stage with Pink

Lily Allen "really enjoyed" her return to the stage as she performed with Pink on Monday night.

The singer famously announced she was quitting pop to focus on her personal life and forge a career in retail in 2009, but it seems the music bug has bitten her again.

The British star jetted to Los Angeles to perform at a secret show with the American singer, with whom she collaborated on new track True Love.

"It was great, felt strange being back on stage again but Pink made me feel at ease. Really enjoyed myself though. Can't wait to get back out there," she told British newspaper The Sun.

Lily, who is expecting another baby with husband Sam Cooper, was supported by friends and family and brought her eight-month-old daughter Ethel with her. Pink showcased several tracks from her upcoming album The Truth About Love during the concert at Sony Studios. She praised the pregnant star for flying out to perform with her.

She also drew comparisons between herself and Lily because both of them were renowned party animals before settling down.

"When I was five months pregnant I was at home covered in cheesecake," Pink joked.