Meghan Trainor underwent a significant transformation involving notable weight loss and cosmetic surgery. She lost around 60 pounds through a mix of balanced diet, regular exercise, and the weight loss medication Mounjaro, used under medical supervision. Following her weight loss, she had cosmetic enhancements including breast augmentation and a lift, which she has openly discussed and embraced. Meghan emphasizes that her transformation is about becoming her healthiest and strongest self rather than erasing her past body, and she continues to advocate for body positivity, explaining that wanting to change one's appearance does not negate self-love. Her new look has left some fans saying she looks almost unrecognizable, but Meghan embraces the changes confidently and highlights the personal agency behind her choices.