The former "Beverly Hills, 90210" star was vacationing at the St. Regis Punta Mita Resort in Mexico last week, when her bikini top fell off.
The actress quickly covered up her lady bits before any damage was done, but it was definitely a close call.
Tori did look slightly amused, which has us wondering if it was a staged publicity stunt. Either way, we're glad she was able to cover herself up before any pictures were taken -- nip-slips aren't a good look on anyone!
Click "Launch Gallery" above to see even more wardrobe malfunctions!