Nicki Minaj was denied entry to her own album release party.

The "Moment For Life" singer is reportedly very unhappy after police prevented her from celebrating the release of her new album Pink Friday: Roman Reloaded The Re-Up with her entourage at New York hotspot Greenhouse Nightclub last night because the club was already full to capacity.

"Nicki turned up to the club with about 25 people at 3:30 in the morning. She wanted to celebrate with her fans, but she was denied entry at the door by the police because they said the venue was at capacity and there was nothing they could do to accommodate her," a source said.

According to insiders Nicki, 29, was scheduled to make an appearance alongside rappers and music producers Flo Rida and Fabolous but arrived at the event too late. "Nicki wasn't happy about it, so she and her group just left," an eyewitness said.