Paloma Faith - Paloma Faith Spearheading Charity Pyjama Day

The pop star wants fans to support the U.K.'s Comic Relief appeal by dressing down on 15 March (13) and signing up their friends and family as sponsors.

Faith launched the campaign on Thursday (31Jan13) at a photocall, for which she posed in silk Agent Provocateur sleepwear. She called the initiative a "weird" and "fun" way to generate cash and help tackle poverty.

She explained, "I've got quite glamorous pyjamas on, but you can also go in your Snoopy pyjamas or whatever... You can do it without being embarrassed. Stand proud looking ridiculous and hope that everybody else is too."

Other stars getting involved in the 2013 Red Nose Day for Comic Relief include Jessie J, Nicole Scherzinger and One Direction.