Miley Cyrus has sparked more controversy as she returned to the stage in London.

The former Hannah Montana star opened the UK leg of her Bangerz tour after sliding down a giant tongue at the capital's O2 Arena.

She began the show, which came after she pulled out of several US and European dates following a severe allergic reaction to antibiotics, with a series of expletive-filled outbursts.

Miley donned a dollar print leotard, flew on to the stage in what looked like a hotdog, danced on a sports car and sported a giant tongue coming out of her chest during various costume changes.

The singer reportedly discussed drugs in front of her young crowd.

The Sun's Tom Thorogood tweeted: "Miley just said 'motherf*****s' four times in the opening 20 seconds of her O2 gig. Plenty of red faced parents around."

Apparently quoting Miley, he wrote: "'I'm sure you guys smell of alcohol and you've been smoking weed and you've been taking tons of pills.' Miley to crowd (average age 12)," and later: "'I know a lot of you are probably stoned... So this is Why'd You Only Call Me When You're High?', followed by: "I used to smoke and they were the best 3 years of my life but no one wanted to kiss me but weed is much better."

Many young fans gushed about the concert, with SophieeHarriss writing on Twitter: "That was honestly one of the best nights of my life, I love @MileyCyrus so much."

Lindsay Davis wrote: "Literally @MileyCyrus is a goddess! Best concert I have EVER been to! The costumes the props the dancers!

But one father, attending with his 15-year-old son, said of the content: "It would be different if it was a good show. But it's not even a good show."

The Bangerz concert garnered praise in the Daily Star, which called it "gob-smackingly brilliant, the theatrical equivalent of gargling with popping candy while rubbing raw chillis on your eyeballs."