It’s believed that Tiffani Amber Thiessen got a breast implants procedure. The plastic surgery obviously wasn’t performed until well after her Saved By The Bell days though. Back then, she was no more than a B cup (in the early 90’s at age 18), but now she’s listed as a 36D. Unless she became morbidly obese, a two bra cup size jump couldn’t be attributed to anything other than breast implants. Just look at the striking difference in her breast size here.