Rachel Bilson & Hayden Christensen Honor Designer Kris Van Assche

Rachel Bilson and fiance Hayden Christensen attend a cocktail party in honor of designer Kris Van Assche at The Cooper Square Hotel Penthouse on Tuesday (September 8) in New York City.

The party was hosted by GQ and Dior Homme and honored Kris, who is the Dior Homme artistic director.

Rachel and Hayden (both 28) were seen keeping closing and holding hands. Rachel is also in town for the big event this month: NY Fashion Week!

10+ pictures inside of Rachel Bilson and Hayden Christensen honoring designer Kris Van Assche…