After an amazing X-factor appearance, Britney Spears decided to drop by British nightclub G-A-Y to celebrate her birthday and hang out with friends before heading back to NYC for Tuesday’s Good Morning America.

The video shows a nice, fun gathering… but according to sources, the event was nothing but fun.

We got to Heaven at 9 to find the place a shambles. There were two ques, the have wristbands and the have nots, and some door bitches (the worst kind) were gleefully yelling at the have-nots that it was members ONLY. They were also going through those with wristbands and telling those they disliked the look of to leave. In general the ambience was manic, oppressive and stressful. Bearing in mind the club didn’t open till half 10, so we had to stand in the cold and rain having this barked at us for an hour and a half.

Telling those they disliked the look of to leave? That sounds eerily familiar to Spears’ Screening of ‘For the record’ — if you don’t look good enough, you don’t get in.

Everyone started to boo, and Jeremy began signaling to someone off-stage who clearly seemed to be Britters herself. The crowd began chanting her name but he said “it’s no good, her people have refused to let her come on. She’s going to be in another room and some of you may get to go and see her and she’ll wave and say hello, and hopefully she’ll change her mind and come out on stage.”

Britney Spears was reportedly to perform at the nightclub, but due to an aggressive crowd, she was not allowed to take the stage.

So Jeremy left and the lights went back down and the music came on, and everyone began pushing and shoving again. This went on for about 15 minutes before the DJ announced that Britney “would not be taking to the stage tonight”. People began getting really angry and fights broke out. Then some G-A-Y bitchy staffer came on and told everyone to move backwards because the people at the front were being crushed. He rationalized this with “Britney is not coming out, so there’s no point pushing.” to which people began to boo. His response was “fine, if you want to boo Britney that’s fine, it’s not our fault she won’t come out here.”

This went on 2 or 3 times before after about 20 minutes the house lights came up again and the DJ announced that categorically, Britney would not appear tonight. The police then arrived to start breaking people up and everything stopped for 10 minutes. The G-A-Y staffer announced that Britney was in the room next door and that if people wanted to go and see her, they could.

I went into the room out of curiosity, and they were letting people in in groups. Basically it was a split level room, with the upper floor being like a VIP balcony where Britney and a lot of her staff and G-A-Y officials were. Apparently for the first group she did a kind of Q&A over the balcony and blew out a birthday cake, but by the time I got in it was basically watching her from a distance packing up and leaving.

The G-A-Y team completely fell apart amidst the chaos, and the best (or worst) thing is that the place was PACKED with reporters from all the major news outlets to cover Britney’s performance.