Singer Lady Gaga is one artiste who will go to any extent to please her fans, and this time, she ended up stripping to her tiny bikini top, giving her Brazilian fans an eyeful.

The 26-year-old singer is currently in South America for her Born This Way Ball tour.

The "Poker Face" singer had to come out of her Rio hotel as her hundreds of fans had gathered around the hotel to have a glimpse of her. She waved to her fans in the hotel balcony wearing only a tiny bikini that barely holds her twin assets.

"OI GALERA! In Rio + My beautiful fans are wearing leather & bandanas in the sun, bad asses, gorgeous smiles & fists in the air! I HEAR U! Im sending you hamburgers, fries, and coke. I love you monsters," she tweeted, adding, "Brazil, there's hundreds @ hotel and this is what the f*ck its all about, revolution through music. Get ready to party at the show in 2 days."

She had earlier flaunted her cleavage in a bikini in Puerto Rico and clearly looked fuller and obese. She admitted to Stylist UK in an interview last week that she has gained weight by a few pounds.

"I've realised I don't have to do very much anymore but make music, because my fans do it all for me. They carry the message so far. Ever since they saw how much Born This Way could affect people, they wanted to do more and have that sort of space of kindness and compassion. I was acutely aware of some photos on the internet - my mum called me and was like, "Did you gain weight?" - everybody was telling me about it, and I didn't really care," she told Stylist UK.

"I thought, well I don't really care if they think I'm fat, because, quite honestly, I did gain about 30 pounds. Adele is bigger than me, how come nobody says anything about it? She's so wonderful and I think her confidence is something I have to match. She has set the bar very high for a lot of woman. I need to be a confident woman and just say politically active things when I can that are helpful to young people," she added.

Meanwhile, Lady Gaga has donated $1 million to help the victims of Superstorm Sandy, that killed at least 98 people and damaged hundreds of houses and properties in the eastern part of the United States.