We hear … that Elliman broker Lauren Muss is celebrating her birthday this Thursday at the Baccarat Hotel & Residence’s $60 million duplex penthouse, which is also her listing. The five-bedroom, 5½-bath unit is 7,381 square feet and comes with 600 square feet of outdoor space.

… that the Coastal Living Hamptons showhouse, at 272 Brick Kiln Road in Bridgehampton, will be on the market for $4.59 million with brokers Scott Strough and Christian Lipp, of Compass.

… that developer DDG co-hosted an event with the Patrick Parrish Gallery at DDG’s new XOCO 325 building for furniture designer Brian Thoreen.