POTW: Rihanna, Lady Gaga, Adele, Soulja Boy

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.

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.

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