Miley Cyrus returns to Bangerz tour in London after lengthy recovery [PHOTOS]

LONDON, May 6 (UPI) -- Miley Cyrus is finally back in action, twerking and tongue-wagging her way through the London leg of her Bangerz Tour at the O2 Arena on Tuesday.

The 21-year-old singer spent much of April recovering from what was described as a "severe allergic reaction" to antibiotics, forcing her to postpone a series of U.S. tour dates.

She was released from the hospital at the end of April, but postponed more tour dates when her symptoms returned.

Cyrus, who tweeted "so f***ing xxxited to get back on touuuuuuuurrrrrr," got back to work on Tuesday.

She made her usual entrance, sliding down a giant replica of her own tongue. The singer also urged attendees to kiss each other, sang a cover of Dolly Parton's "Jolene," and humped the top of a car wearing a unitard made of fake money.