Boldfaced names and their tots did some party hopping at the Society of Memorial Sloan-Kettering Cancer Center's Bunny Hop at FAO Schwarz, benefiting MSKCC's Department of Pediatrics.

Susie Hilfiger and Best & Co. teamed up with Melania Trump (who was on hand with hubby Donald and the adorable mini-mogul, son Barron) and co-chairs Christina Addison, Lisa Errico, and Elizabeth Fuller for an entertaining evening of toys, photo ops, cookie decorating, candy neck¬lace making, shopping, and surprises.

Beth Ostrosky (sporting a five-carat sparkler from her man, Howard Stern) was among the revelers, along with fellow kid-friendly attendees Muffie Potter Aston and daughters Bracie and Ashleigh, Kate Spade, Elizabeth Harrison, Cynthia Lufkin and little Astor Lee, Dejuan Stroud, Jennifer Creel, Barbara McLaughlin, Somers Farkas, and Mary Darling.

Toys 'n' tots-let's go to the hop!