On the 18th of October Roisin will perform at Swarovski Fashion Rocks 2007. The show will feature international designers accompanied by performances from some of the world's top musicians. Roisin will perform during a presentation by Italian fashion house Gucci.
Other artists performing are Alicia Keys, The Gossip and Lily Allen. Hollywood actors Samuel L. Jackson and Umu Thurman are to host the The Prince’s Trust event at London's Royal Albert Hall.
The show will be broadcast on Channel 4 in late October.
You can still buy tickets for the event here.