Katy Perry was really "excited" to catch up with her pals Justin Bieber and Jessie J in London this weekend.
The stars were out in force, but too many cocktails got the better of the I Kissed A Girl singer, who allegedly fell over in the nightclub after drinking a little more than she could handle.
Katy performed at the Capital FM Summertime Ball alongside the likes of Usher, The Wanted, Coldplay, Justin Bieber and Jessie J.
And afterwards Katy was keen to hit the town at Cirque du Soir for a few drinks with Jessie J, Justin Bieber and her rumoured boyfriend, Florence and The Machine guitarist, Robert Ackroyd.
Katy partied until 5 in the morning, and was reportedly spotted with bottles of vodka, champagne and an array of cocktails on her table, but the star had more than she could handle.
A source told The Daily Mirror: "Katy was in high spirits and very excited that Justin was there, as she loves Justin. And she's good friends with Jessie, so they had a catch-up. Before long Katy had sunk a fair few vodka cocktails. She had big bottles of Ciroc and Belvedere on her table."
They also added: "By 5am she seemed to be having some difficulty walking and suddenly fell to the floor. She was down for a while and it took a couple of her mates to get her up. Everyone was staring and there was quite a commotion."
Katy partied until 5 in the morning, and was reportedly spotted with bottles of vodka, champagne and an array of cocktails on her table, but the star had more than she could handle.
A source told The Daily Mirror: "Katy was in high spirits and very excited that Justin was there, as she loves Justin. And she's good friends with Jessie, so they had a catch-up. Before long Katy had sunk a fair few vodka cocktails. She had big bottles of Ciroc and Belvedere on her table."
They also added: "By 5am she seemed to be having some difficulty walking and suddenly fell to the floor. She was down for a while and it took a couple of her mates to get her up. Everyone was staring and there was quite a commotion."
