Actress Mischa Barton breast slipped out of her gown

Actress Mischa Barton suffered an embarrassing wardrobe malfunction last night as she revealed a little more than intended while leaving a fashion show in London.

The star's breast slipped out of her satin red and gold evening gown as she jumped into a taxi after the Fashion For Relief show at the Natural History Museum in South Kensington.

The stunned 22-year-old quickly covered herself up and buried her head in her hands as the car pulled away.
How not to get into a cab: Mischa Barton slips out of her dress after the Fashion For Relief show at the Natural History Museum in South Kensington

Mischa was among a host of stars at the charity event including Princess Eugenie, Cheryl Cole, Sarah Brown and Elizabeth Jagger.

Earlier this week Mischa was spotted with actor Josh Hartnett at trendy club Bungalow 8, however the Pearl Harbour star has since denied rumours of a romance.

Mischa recently split from Rooney frontman Locke, 24, after almost seven months together.

The couple had just returned from a nearly three week safari and charity junket through Africa and all that togetherness seems to have been their downfall.
Wardrobe malfunction: The embarrassed star rearranges her dress before burying her head in her hands

A source said it was Mischa who pulled the plug. The source told In Touch magazine: 'Mischa and Taylor’s romance worked because they spent so much time apart.

'He’d be on tour or she’d be working in Europe and they talked over the phone or e-mail.

'They fought almost every day on the trip. She broke up with him just a few days after they returned to LA.'
Over exposure: The actress falls out of her satin red and gold evening gown after the Fashion For Relief show

Mischa Barton

Mischa Barton in her saggy swimsuit

Mischa Barton was hoping to stand out from the bikini crowd in a distinctive crochet swimming costume at Malibu beach this week - but it didn't quite go according to plan.

The Hollywood actress had a bikini malfunction after her saggy costume revealed more of her derrière than intended as she frolicked on the sand.
Sun lover: Mischa Barton hit a secluded beach in Malibu wearing a crochet one-piece swimsuit earlier this week

Mischa appeared oblivious to the slip-up, and continued to enjoy her low-key afternoon of sunshine and romance with her boyfriend Taylor Locke.

The former star of The OC has been back on her best behaviour following her arrest in April, which saw her sentenced to three years probation for drink driving.

She told Nylon magazine: 'That was a low point for me. I never, ever would have thought I would be arrested.

Saggy: Mischa revealed a little more than intended in her saggy swimsuit

'I was disappointed because it associated me with a group of girls that I would rather not be associated with.'

The actress now spends much of her time living in Paris rather than Hollywood.

She says: 'I love the art and the museums. So far I have been hanging out, really – going to art exhibitions, lots of museums.

When back in LA, Mischa spends most of her time catching up with Locke, who plays guitar with the band Rooney.

Of her romantic life, she says: 'I would rather date outside of the industry. I think actors are a special breed, it takes a specific personality to be an actor - there needs to be some kind of balance.'

Mischa Barton

Mischa Barton's secret romance Revealed

Mischa Barton is in a secret romance with the young director of her latest film.

Mail Online has leared that the British-born Hollywood actress has been very quietly dating Brett Simon, the director of her new movie, "The Assassination of a High School President," which debuted at the Sundance Festival on 21 January.

The film, a spoof of social strata in an uptight catholic high school, co-stars Bruce Willis and his actress daughter with Demi Moore, Rumer.
Romance: Micsha with Brett Simon (centre) in a promotional shot for her upcoming film

The project didn't win much praise from the notoriously fickle audiences at the prestigious festival, but according to a source Mischa and her director couldn't have cared less.

"This is a major love affair," the source says, adding that Mischa and Brett's relationship has showed no signs of slowing down since the film wrapped.

Previously, Mischa dated her 'The O.C.' co-star Benjamin MacKenzie, and for several years, partying oil heir Brandon Davis.

But it was director Brett who has ultimately won her heart.

The source says: "They became very close right from the start of shooting last summer, and Mischa was pretty insecure about carrying the movie.

"Brett was the one who helped her get over that by spending hours alone with her helping her develop her character and refine her performance. That's how they got together."

Previously, Brett was best known for a series of short films he directed before his 'Assassination' project caught the eye of Hollywood producers.

He also directed the Killers' video for their monster hit "Somebody Told Me."

The source says that video was enough to convince Mischa to sign onto the film.

Even as Brett worked in Los Angeles on the film's final cut last month, he took time away from the editing bay to help Mischa recover from her embarrassing drunk-driving arrest in West Hollywood.

"Brett was the first person she called," the source says of Mischa's arrest.

The couple have been quietly spending nearly every night together for the last several months, the source adds.

And "they didn't spend a night apart" at the festival, the source confides, even though many involved with the movie remain unaware about the true nature of the director and his star's relationship.

The source says: "This is the most serious Mischa's ever been about a guy and he's the most mature man she's ever dated. They're in love and no matter what happens with the movie, this is going to stay serious."

Mischa Barton

Mischa Barton's etiquettes upset British royal

Hollywood beauty Mischa Barton reportedly offended
British royal Lord Freddie Windsor by playing with her
personal organizer throughout a dinner party at London's
Kensington Palace.

The 27-year-old offspring of Princess Michael of Kent Invited
the former The OC star to dine at his parent's residence in the
British capital and was stunned when she brought along her
hairdresser Pal Andy LeCompte, She brought along her hairdresser as chaperone.

Even though Mischa was seated right next to Freddie,
she spent the whole meal taping text messages into her
organizer. Freddie was rather offended."

Mischa Barton