Rihanna's trip to Oahu looks as if it was pretty relaxing, to say the least.
The sexy singer was spotted lounging by the pool on Friday, Feb. 22, while vacationing with Chris Brown as part of her 25th birthday celebration.
And, oh yeah, the pop star was wearing a bikini, too!
Rihanna and Chris Brown leave Los Angeles club together
Decked out in a skimpy floral two-piece, the Grammy winner kindly showed off her winning curves.
Check out Rihanna's sexy twitpics