Katy Perry and Orlando Bloom were spotted "aggressively flirting" at a post-Golden Globes party.

Katy Perry

Katy Perry

The 'Dark Horse' hitmaker and the 'Pirates of the Caribbean' actor were seen enjoying each others' company whilst drinking champagne.

A source told the New York Post's Page Six column: "Katy and Orlando were standing in the back of the party drinking Moët and were aggressively flirting before leaving together.

"He wouldn't stop staring at her cleavage - and she was very flirty and laid on the charm."

During the evening, the pair were also seen having a dance-off together.

Another insider told Us Weekly magazine: "Katy and Orlando Bloom had a total dance-off - it was the best part of the party. Katy literally dropped to the floor and was waving her booty around, beckoning Orlando.

"He would lean in to whisper into her ear and touch the small of her back as they chatted."

Meanwhile, if Katy wanted to take her rumoured romance with Orlando forward, she would have to get on well with the 38-year-old actor's former wife and the mother of his five-year-old son Flynn, as she revealed the pair are "really good friends".

Miranda previously shared: "Flynn is our number one priority so we're conscious of always making the decisions that benefit him the best. We're really great friends and we're both really happy."