Kirsten Dunst (left) and Samantha Ronson
George Pimentel/Getty; Denise Truscello/WireImage
05/21/2012 at 06:00 AM EDT
had a fun girls' night out at the Chateau Marmont with four friends – including celebrity deejay Samantha Ronson
, who was recently spotted hanging out with Sofia Vergara
in N.Y.C. The unlikely duo were getting along famously, laughing and telling stories like old friends.
All the ladies were sipping white wine, except Dunst who drank a red-colored drink, according to an onlooker.
Dunst and Ronson were smoking, too, and lighting each other's cigarettes at their table on the patio at the famed West Hollywood hotel.
Between cocktails, they were picking at some food and sharing laughter as they told stories. Says an onlooker: "They were having the best time – being quite fun and quite playful." According to the onlooker, the group stuck around past midnight just "laughing the night away and being very carefree."