Mediacorp actress Denise Camillia Tan put her endurance and stamina to the test on the morning of Sept 12, scaling 40 storeys in just 16 minutes — all for a good cause. A Facebook post by her management company The Celebrity Agency showed clips of her making her way up the One Raffles Quay building, with several people dressed in black cheering her on from different floors. The post captioned: "Forty storeys, 16 mins — well done Denise Camillia. "As a Club Rainbow (Singapore) ambassador, Denise joined Reach for Rainbow 2026 Climb Day, flagging off the waves before taking on the challenge herself! Climbing for a meaningful cause, one step…