Rihanna is thrilled Brazil have won their semi-final World cup match against Colombia.

The singer live-tweeted the game on Friday, and showed her support for Brazil by posting a racy topless pic where she’s covered in Brazil flags.

Rihanna also noticed a particularly attractive girl in the crowds and posted a clip of the brunette with the caption “Colombian Cutie”.

"This is the game I've been waiting for! I sincerely LOVE both of these teams!" she tweeted earlier in the day.

The Barbadian star has been keeping a close eye on the World Cup so far, and congratulated the US team for their fine work after they were beaten by Belgium.

"Great job #USA! I'm proud of you boys! You put your heart in it!!!" she tweeted at the time.

Rihanna is currently single, and clearly enjoying herself. The Love the Way You Lie star insists a boyfriend is something she is just not interested in right now, although dating is fun.

"When I go on a date, I look the guy over, from head to toe," she admitted to German magazine Bravo. "But to be honest, I don't want a serious relationship right now. I just want to have fun! I have three girlfriends and about 20 male friends. I just love listening to men - I always learn something," she smiled.

Although Rihanna has been through heartbreak, she says she keeps that side of herself private. According to the singer, she is very sensitive.

"I don't want anyone to see me cry. That's why I don't tell anyone when I'm upset," she explained.