Miley Cyrus returns to the stage, says she didn't suffer drug overdose

Miley Cyrus performs live on stage at 02 Arena on May 6, 2014, in London. Getty Images

Miley Cyrus has said she is fighting fit, as she resumed her Bangerz tour in London after a series of canceled shows.

The 21-year-old pop star delayed U.S. dates until August after treatment for a sinus infection went awry, and last week postponed two European shows. Cyrus says that was because she suffered a severe allergic reaction to antibiotics.

But she told reporters she was "the poster child for good health" before performing at London's O2 Arena on Tuesday. She said, "I didn't have a drug overdose."

"I've been laying down for three weeks. I'm gonna go off -- I'm like a star waiting to explode," she added.

The former child star, who has garnered mixed reviews for her risque adult image, gave an energetic performance complete with crotch-grabbing, erotically tinged choreography and a ride on a giant hot dog.

Songs ranged from Cyrus' hit "Wrecking Ball" to covers of Bob Dylan's "When You Go" and Dolly Parton's "Jolene."

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