Dennis Basso is celebrating 30 years in fashion with his show tomorrow at Lincoln Center. Three of the women who walked in his show in the ’90s — Joan Collins, Joan Rivers and Ivana Trump — will be front and center. We’re told Trump went to Basso’s very first show, in 1983 at the Regency Hotel, and bought seven fur coats right after the show. Also expected are Olivia Palermo, Star Jones and Fern Mallis. Last week, Basso was spotted at lunch with two top CAA agents — sparking rumors he may be working on a TV show aside from his QVC appearances. Basso was also seen schmoozing with Coco Rocha, who was dining at Michael’s.