HBO’s “Girls” star Zosia Mamet nearly got in over her head when she took an ocean dip before the Cinema Society’s screening of “Robot & Frank” at a Hamptons estate Friday. The actress, daughter of “Glengarry Glen Ross” playwright David, arrived at Jerry and Judy Della Femina’s oceanfront mansion and decided to take a swim, spies said. “The water was definitely a bit rougher than it looked,” our source added, after a near-monsoon struck the area the day before. “Zosia said she’d started to get a little nervous,” our witness reports.
VIPs at the Rent the Runway-sponsored fete included Liv Tyler, John Slattery and James Marsden.