Rihanna definitely had a Sunday fun day.
The singer, along with several of her dancers and friends, showed up at the New York City nightclub Pink Elephant late Sunday night (so late it was about 2 a.m. on Monday), and partied until the even wee-er hours of the morning, a source exclusively tells E! News.
"She was kind of flirting with people in her group but no one specifically," they told us, also mentioning that the star wasn't paying special attention to any guys (and no, Chris Brown wasn't there).
"She was doing her own thing," the source said. "She just comes and has a good time and hangs out with her friends. They were celebrating someone's birthday."
Ri-Ri posted photos of her friend's birthday celebration that night on Instagram, writing, "@leleboo_ph--ku birthday tun right up!!!! Yassss!!!! #s--tthatmatters happy birthday Lee Lee, we love you always!!!!," before also posted a picture of a candlelit cake and saying, "There's only one lee lee boo and she's all mine!!!!! #bfflife @leleboo_phucku rev the ph--k up #cake #birthdaybehavior"
The source added that the Barbados beauty was "dancing all night."
"At 4 a.m., the club closes and the music was turned off and the lights were turned on and some people left, but she wanted to stay, so they turned out the lights and the DJ kept playing music until she left just before 5 a.m."
Sounds like quite a night!