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So much for taking it easy after her recent health scare!

After postponing more than half a dozen Bangerz tour dates due to a severe allergic reaction to antibiotics last month, Miley Cyrus was given a clean bill of health on Sunday. So she's going to bed at 10pm and watching Netflix before her shows, right? HA!

Miley threw a party at Madame Jojo's in central London's Soho neighborhood, and stars like Kate Moss and Pixie Lott partied with the 21-year-old singer until the wee hours of the morning. Miley wore a Versace bra and briefs with leggings and a flannel shirt tied around her waist, and at one point she rocked a red wig.

The Daily Mail reports that she was sucking on a champagne popsicle at the club, and other sites seem to suggest that Miley might have -- gasp! -- been drinking too. Miley chatted with reporters at a press conference before her show at the O2 Arena in London on Tuesday, and when asked about wild nights out, she said, "I'm probably the only one on this tour who doesn't drink or smoke before a show, as I take this really seriously. It's almost like being an athlete being up here, because if someone was f*cked up, they definitely couldn't do my show."

In her defense, Miley doesn't take the stage again until tomorrow night, but you'd think she wouldn't be going HAM just days after her doctors gave her the go-ahead to return to her tour! And especially after making the comment that she was the "poster child for good health"...