ROCK OF AGES: Givenchy got off to a late start waiting for Liv Tyler, but it was her birthday after all. "We had a really fun party in my room with all the Givenchy people," Tyler said. "Now we're going to get some drinks." Fellow Givenchy face, model Marie Steiss, who gave up her seat for Liv's sister Chelsea, said she's taking up acting classes and trying her hand at singing. "I've lent my voice to a few music projects," she said. "Let's say it's very rock, PJ Harvey," she teased. In life imitates art, actress and singer Joana Preiss is playing a songstress in her next film, which starts shooting in the U.K. soon. Beatrice Dalle, meanwhile, has two films out: "One that I love and one that I hate," she said. "The first is 'New Wave' about infanticide and the other, I won't tell you the name it annoys me so much."
BOAT PARTY: "I don't think I'll get in the pool. I'm on my way to spin some records," vowed Christophe Lemaire, the Lacoste creative director as he hosted a boat party on the Seine to celebrate the French brand's 75th birthday and launch a Visionaire edition devoted to Lacoste. There were plenty of guests, however, who did jump into the small plastic pools set up around the boat, moored just under the Eiffel Tower. Others got into water gun fights as they grooved to a concert by Santogold. Karl Lagerfeld showed up close to midnight, unleashing the usual paparazzi frenzy before he found a quiet corner to chat with Yves Saint Laurent designer Stefano Pilati. "I'm not going swimming either," said Pilati. "I'm too shy for that."