RHONY’s Luann de Lesseps, 57, Rocks Black Bikini On Holiday Vacation: Photo

RHONY veteran Luann de Lesseps, 57, displays her slim waistline

Will Luann de Lesseps Watch the RHONY Reboot? She Reveals...

Luann de Lesseps wishes new RHONY cast 'luck' - as she teases new spin off with Sonja Morgan