POTW: Rihanna, Lady Gaga, Adele, Soulja Boy ArticlesNews By Billboard Staff | August 19, 2011 6:45 PM EDT Rihanna trades her fire red locks for chocolate tresses to match her first fragrance, Reb'l Fleur, at the perfume launch at House of Fraser on Aug. 19 in London. 0 0 0 0 Rihanna gets rid of her fiery locks, Lady Gaga goes Greaser and fans witness a deadly stage collapse. It all happened this week, and we've got the pics to prove it. SEE THE PHOTOS OF THE WEEK | LAST WEEK'S PHOTOS News of the Week: Billboard's 5 Most Popular Stories 1. 20 Dynamic Hip-Hop Duos 2. MTV Video Music Awards Most Outrageous Outfits 3. Katy Perry Makes Hot 100 History: Ties Michael Jackson's Record 4. Poll: Best MTV VMA Performance Ever? 5. Katy Perry's Most Outrageous Outfits Print Tagged Rihanna, Lady Gaga, Music, Androgyny, Gender, Pop music, Entertainment View the discussion thread.