It was a Ronson family reunion last night (April 3) as Mark, Charlotte and Samantha Ronson joined their mother Ann Dexter-Jones at the I Heart Ronson launch party at Bar Marmont in Los Angeles.

Anyone and everyone in Hollywood stepped out to lend some celebrity support to the new line collection designed by resident family designer Charlotte. The 31-year-old sister of music producer Mark and DJ Samantha has been designing clothes for nearly a decade, beginning with her 2000 C. Ronson collection, which introduced her trademark “tushies” (a lingerie-inspired romper), wedge heels and iPod “hoodie” scratch protectors.

The collection — which will be available exclusively through JC Penny later this month — targets women 21-35 and includes 80s-inspired printed blouses for $30, high-waist pink shorts for $36 and $58 prairie-style maxi-dresses.

A through D-list attendees included Paris Hilton, Doug Reinhardt, Simon Rex (Paris’ former flame), Rashida Jones, AnnaLynne McCord, former “it” girl Cory Kennedy, Drea De Matteo, Jeremy Piven, scene queen Jewel, Kim Kardashian, Milla Jovovich, Nicky Hilton, David Katzenberg, the ageless Sting and a solo Nicole Richie.

Oddly enough, there was no sight our favourite Ronson family member of all — Lindsay Lohan!