Lindsay Lohan watched friend Rita Ora perform at London's G-A-Y club last night (10.05.14).

The actress, who has finished promoting her docu-series on Oprah Winfrey's OWN network, sat at the side of the stage with a male friend as the 23-year-old singer performed a sexy striptease during her show.

She later posted a photograph of the crowd on Instagram with the message: ''@ritaora #supportyourhomiez #bff'', after going along to the concert with friend Chloe Green, daughter of Topshop boss Sir Philip Green.

Rita wore a white crop top and black trousers for the show, before two costume changes, and was surrounded by a number of female dancers on stage, while launching her new single 'I Will Never Let You Down'.

She posted a series of snaps on Instagram with friends who also went along to the concert, including BBC Radio 1 DJ Nick Grimshaw and model Daisy Lowe, who claims she has ''fully converted'' and Rita is her ''new favourite pop star.''

Meanwhile, Chloe claims Lindsay is ''doing well'' after a number of stints in rehab and thinks the 27-year-old star is leaving her hard partying days behind her.

She said: ''Lindsay has cleaned up her act a lot. I'm not a big drinker, so when she is with me we do more of the shopping. We go through her whole wardrobe. She likes putting people together and dressing up.''