What was going on in Trousdale on Saturday night (Nov. 15) that attracted so many female celebs? The bar located on the famous Sunset Blvd. in Los Angeles was a hotspot this weekend for celebrities like model Alessandra Ambrosio, sisters Hilary and Haylie Duff, actress Mena Suvari and even celebuspawn Rumer Willis!

Is this bar really that hot or are these Hollywood hotties holding conspiracy meetings against the paparazzi up in there? Oh yeah, we’re onto you!

More pics below!