Ashlee Simpson Wentz (at left) rocked heels, not sneaks to the K-Swiss dinner.

Now we know what all those paparazzi flash bulbs were last night.  Sneaker co K-Swiss hosted a private dinner party at Hollywood haunt Chateau Marmont to celebrate the launch of their Remastered “Classic” shoe last night. The evening introduced Hollywood’s hot new “classic” tastemakers and celebrities to the new footwear collection, which was originally launched in 1966.  (When their parents were in high school).

Guests included:  Ashlee Simpson-Wentz, Jessica Stroup, Katie Cassidy, Lo Bosworth, Topher Grace, Shoshana Bush, Alison Brie, Leven Rambin, and socialite Carlos Lopez.