Krysten Ritter creates a dress for Corey Lynn Calter

Actress Krysten Ritter may have a polished and ultra-feminine style, but when tasked with creating a dress for designer Corey Lynn Calter, her inspiration was a bit darker than her usually sunny ensembles and vintage-looking outfits. "I love 'Beetlejuice'!" Ritter exclaimed about her inspiration when designing the black-and-white-striped halter neck dress with a flouncy black skirt. "Basically, every single movie that Winona Ryder was in the '90s is my favorite movie. People used to call me Lydia in high school, and I’m finally embracing it. This dress is very 'Beetlejuice,' and I'm obsessed with Winona."

The striking, raven-haired actress and a group of about 20 women gathered in the garden of the Chateau Marmont on Thursday afternoon to celebrate the "Krysten" dress (100% of its sales benefit the Dare to Share organization). Her friends and fellow starlets joined her, making for a super girly and very well-dressed group that included Kate Mara, Anna Faris, Sophia Bush and Rachel Leigh Cook.

 "This is such a gorgeous group of girls!" said a delighted Ritter, who was every bit the hostess and thanked Calter for the opportunity to play fashion designer -– a role she is interested in pursuing further, saying she would love to do a small capsule collection of eight to 10 pieces in the future. At the moment though, she seems tied up with her day job. She has four movies in the can, and one she wrote that's tentatively titled "BFF and Baby," starring herself, Kate Bosworth and Rachel Bilson. "The fashion in the movie is heaven," she said about the costumes, which were designed by stylist and Confederacy owner Ilaria Urbinati.

Calter seemed to give the actress her seal of approval as a budding designer, saying that Ritter was very hands-on and had a strong idea of exactly what she wanted the dress to look like. "She was much more involved than what I expected," Calter said. "She really wanted something she could travel with and wear with flats or heels, something very girly but not too prissy.”

If you want to get yourgirly-goth look on for summer, the "Krysten" dress is available now at www.coreylynncalter.com for $196.

-- Melissa Magsaysay

Top photo: Corey Lynn Calter and Krysten Ritter. Credit: Chris Weeks / WireImage

Second photo: Sophia Bush. Credit: Chris Weeks / WireImage

Third photo: Kate Mara. Credit: Chris Weeks / WireImage

Bottom photo: Anna Faris and Krysten Ritter. Credit: Chris Weeks / WireImage