OOPS!… Britney Spears, 44, Reveals ‘Embarrassing’ Botched Botox Results The “...Baby One More Time” pop star endured the undesirable side effect for weeks. Spears, 44, posted an Instagram video talking about her failed Botox results on Friday. The pop star—who’s been famous since her 1998 single “...Baby One More Time” debuted when she was just 16—admitted that she felt “embarrassed” by the Botox results, which persisted for almost four weeks. Typically, Botox results last between three and four months. Instagram/Britney Spears“Girls, you have to be careful if you do Botox,” Spears warned her audience in the video.