It’s come-clean week for celebrities. Katie Couric discussed her battle with bulimia the same day her guest Demi Lovato admitted to similar issues that started when she was a toddler wondering why her belly wasn’t flat.

Then Lady Gaga comes out with her own admissions, after fans got on her for a 25-pound gain (she still looks like a size 6, just saying). Posted with her bikini photo on LittleMonsters.com is the caption: “Bulimia and Anorexia since I was 15.” Gaga wants her fans to stop worrying about their weight and to “celebrate your triumph over insecurities.”

What Not to Wear cohost Stacy London isn’t one to shy away from her past, either. In her new book, The Truth About Style (Viking, $32.95), London talks about how she became anorexic during college and later suffered bouts of binge eating. Her dress size has run the gamut, from a zero to 16.

Meet Stacy and ask questions during a signing presented by Books & Books at Neiman Marcus Bal Harbour Shops 2 p.m. Oct. 8.

Hollywood in Miami

Actor/director Robert Townsend chatted about his career Tuesday at a screening of his latest producing effort, drama In The Hive, starring the late Michael Clarke Duncan, at University of Miami’s Bill Cosford Cinema.

Duncan, who died earlier this month from heart attack complications, played a tough yet caring principal in a school for troubled boys.

“He was a beautiful man who would do anything for you,” Townsend said of The G reen Mile Oscar nominee. “This was some of his best work.”

Townsend ( Hollywood Shuffle, Meteor Man, The Parent ’Hood) is collaborating with UM’s School of Communication students to shoot a feature film in Overtown in November.

Madeleine Marr