Kelly Osbourne stole the show at last night's The Dark Knight premiere in London - but for all the wrong reasons.

Wearing a garish transparent black dress, the daughter of Ozzy and Sharon Osbourne looked anything but demure as she walked the red carpet.

The faux-pas was all the more unfortunate given that the Batman sequel premiere attracted a who's who turnout of star-power in London's West End.

Enlarge 

Enlarge 

Red carpet slip-up: Kelly Osbourne's transparent outfit was less than fetching at the Batman premiere in London's Leicester Square

Maggie Gyllenhaal, who plays Rachel Dawes in the film, looked stunning in a backless black satin gown.

The Batmobile had earlier roared up the red carpet to mark the much-anticipated return of the Caped Crusader to the big screen.

The Dark Knight's stars Gyllenhaal, Christian Bale, Sir Michael Caine and Aaron Eckhart all greeted fans at the Leicester Square event.

Maggie Gyllenhaal, who played Ledger's love interest in the film, looked resplendent in a backless black satin gown

Sir Michael Caine, reprising his role from Batman Begins as butler Alfred, said: 'It's wonderful. I've been to a lot of these and this is the biggest lot I've ever seen turn out for a movie.

'The box-office is great and the film has been so universally accepted and praised. I'm quite overwhelmed actually.

"I'm at this age and I'm in one of the biggest movies of the world.'

Christian Bale, who plays the main role of Batman, and wife Sibi arrive at the premiere of The Dark Knight

'Wonderful': Sir Michael Caine and his wife Shakira were amazed by the enthusiastic response from fans in Leicester Square

The follow-up to Batman Begins has been hailed by critics as the film of the year for its adult storytelling and, in particular, a mesmerising performance by tragic Heath Ledger as The Joker.

A huge amount of press attention has focused on the film following the Australian's tragic overdose death in January at the age of just 28.

Ledger is already tipped to secure an Oscar nomination at the 2009 Academy Awards for his standout performance.

Aaron Eckhart plays Gotham District Attorney Harvey Dent in the sequel

Caine, 75, said: 'We've gone through the mourning phase and we're now in the tribute phase. When I saw him onscreen I was completely blown away.

'He was such a wonderful actor and he created one of the greatest villains you've ever seen.'

Meanwhile, The Dark Knight toppled Spider-Man as the king of Hollywood superheroes today, according to final box-office figures.

It took a US box-office record of $158.3million (£79.2million) in its opening weekend, beating the previous best of $151.1million (£75.6million) set by Spider-Man 3 in May last year.

Star power: Gary Lineker and model girlfriend Danielle Bux also dazzled

Peaches Geldof (l) and singer Liz McClarnon (r) smile for the paparazzi

Hollyoaks actress Roxanne McKee (l) and her former co-star Gemma Bisset (r), who now stars in EastEnders, turn heads on the red carpet

Two's company: Daisy Lowe (l) and Alexa Chung (r) pose for the cameras

Actresses Tamsin Egerton (l) and Sarah Dunn (r) looked beautiful

Petra and Tamara Ecclestone wore barely-there black mini-dresses and fetching stilettos

Crowds line the street to see the Batmobile arrive for the premiere of The Dark Knight

The Batmobile was one of the first guests to arrive at the premiere

Having a laugh: These two fun-loving fans arrived at the premiere dressed as Batman and The Joker

Tribute: The cast and crew have dedicated The Dark Knight to Heath Ledger, who died in January. Ledger as villain The Joker (r) in the film

Sharp dresser: Christian Bale as superhero Batman in The Dark Knight (above). Taking to the skies (below)