Mischa, Mischa, Mischa! Where have you been hiding?

On Tuesday night Mischa Barton attended the Los Angeles premiere of A Resurrection, at the ArcLight in Sherman Oaks, and it's been a few months since we've seen the 27-year-old starlet, but she was looking lovely on the red carpet. Mischa has two other movies in the works, so hopefully we'll be seeing more of her this year!

The movie follows a group of popular high schoolers who are hunted (and haunted) by the ghost of a classmate they murdered, and Mischa stars as a counselor at the school. She'll always be Marissa Cooper to us...

Tara Reid was also there, and aside from wanting to pull up her skinny jeans, we think she looked fabulous as well!

Mischa Barton and her new boyfriend, British actor Sebastian Knapp, went to dinner at the Alberta Passage Dinner Club in Vienna, Austria the other night, and it looks like the 26-year-old starlet has finally found a good guy!

The couple have been dating for nearly four months, and not only does she seem super happy with him, but she's starring in the Irish stage production of Steel Magnolias, her clothing line is doing really well and she seems to be staying away from the party scene.

If only we could get her back on the small screen! Every time we see her we have serious Marissa Cooper withdrawals...

Mischa Barton attended the launch of designer La Hong Nhut's new boutique in Vienna, Austria on Tuesday, and the 26-year-old actress posed for photos with her beau, British actor Sebastian Knapp.

The two have been dating for nearly four months, and since Misch is currently in Ireland starring in the stage production of Steel Magnolias, we're guessing the two have gotten to spend quite a bit of time together. But maybe she wasn't ready for her close up? The former OC starlet looked like a little confused when we snapped her with both Knapp and the designer!

We were wondering what this was all about!

Mischa Barton stars in the new music video for "Everybody's On The Run" by Noel Gallagher's High Flying Birds, and the starlet is stripped down to her skivvies in the clip. We don't want to give too much away, so you'll have to check it out above and see for yourself!

Mischa Barton dined at Il Sole with her mom last night, and the 26-year-old actress is looking better than ever! Earlier in the evening the former OC starlet hosted the LA store opening of the Japanese fashion house Growze, and not only does she look great in their clothes, but it seems like her decision to hire stylist June Ambrose is paying off as well.

The actress also showed off a tote from her Mischa Barton handbag line, and she chatted with CelebStyle about her expansion into accessories and clothing. "I've always had a serious love of fashion, and it all started with my handbag line," she tells the site. "This current clothing and accessories line has a fun, youthful vibe." Can't wait to see more of it!

Mischa Barton was all smiles as she enjoyed a solo stroll in LA with a cup of java, on Thursday afternoon.

The OC star has gone a bit MIA since her TV heyday, but now she's setting her sights on a new career: fashion!

Barton has been busy focusing on the launch of her new website, MischasPlace.com, which features her new clothing collection, consists of everything from flirty skirts and dresses to military style jackets and basic leggings, with prices ranging from $36-$280.

The 26-year-old fashionista is also hawking her cosmetics and beauty collections, as well as her handbag line. Keep workin' it, girl!

Mischa Barton may not have had any high-paying acting gigs over the past few months, but it looks like she's doing just fine financially!

Mischa and a blonde gal pal were spotted at the bank in Los Angeles yesterday, and after visiting the teller, the actress handed over a wad of hundreds to her friend, who appeared quite distressed. Not only that, but she gave her a very sincere embrace before the ladies left the ATM. Aww, what a great friend!

With an outfit like this, laundry day is the only acceptable excuse!

Mischa Barton was spotted getting her dry cleaning in Silverlake over the weekend, and the 26-year-old actress wore an awkward combination of a button down shirt, a sweater, sneakers and leggings. Sigh. Whatever happened to the fashion forward beauty we fell in love with on The OC?