The actress hopped a ride on a Harley…and she was still in her Dolce & Gabbana gown.
"I think my favorite part was after the after party," Dawson told me last night at Hollywood Domino's Dancing Spies Balls benefit for PCI Media Impact at VIP room. "My friend had his Harley, which he kept calling a 'scooter.' When were leaving, he was like, 'I'm just going to jet back home on my scooter' andI was like, 'Can I take a photo on the bike?'
"Then he said, 'I have an extra helmet,'" she continued. "My friend balked because she was like what about your hair, which was silly because we were just going to bed afterwards. So I ended up on the back of his motorcycle in my dress."
The famed Boulevard de la Croisette was "completely empty" because it was in the wee hours of the morning.
"I was blowing kisses to the Palais and the full moon," Dawson said. "It was the most amazing night. I felt like I was shooting one of those really fun commercials."
Dawson most recently wrapped the tentatively titled Finally Famous, a comedy about a Hollywood actor (Chris Rock) trying to revive his career when his "Kim Kardashian-esque" reality TV star fiance (Gabrielle Union) convinces him to film their wedding for—what else?—a reality show.
Dawson plays a journalist in the movie, which was also written and directed by Rock.
"I remember my first thing with reality TV was when Survivor first came out," Dawson said. "I was filming in Canada and came back and Survivor was in all these newspapers and I was like, 'What happened? Who died?' and then I saw it was a television show. I was like, 'OK, the world has changed.'"
Also at the Hollywood Domino event were Lydia Hearst, Paris Hilton and Amaury Nolasco.