Lady Gaga has joined forces with Bono to help combat AIDS - she's designed her own set of headphones to raise funds for his RED campaign. The U2 frontman launched the product range in 2006, previously working with rapper Dr. Dre to make his own set of earpieces.

Bono, who recently signed a deal with sportswear company Nike to create charity red shoelaces, has now enlisted the "Poker Face" hitmaker to help boost the scheme. He says,

"This is a very big day for everyone involved in the fight against AIDS. Nike is about winning, and if we keep our concentration over the next few years, things might start to turn around.

"Lady Gaga is the latest (RED) warrior to get involved. You know Dr. Dre did those Beats headphones, the big ones, you see people wearing around their neck? Well, Lady Gaga is launching her own (RED) headphones and they are the best sound money can buy."