In March 2025, Trainor wore a black off-the-shoulder dress to attend Billboard's Women in Music Awards. After fans took notice of her new appearance, Trainor addressed her significant weight loss on Instagram, attributing her transformation to "huge lifestyle changes" such as using the weight-loss drug Mounjaro and working with a dietitian.
"No, I don’t look like I did 10 years ago. I’ve been on a journey to be the healthiest, strongest version of myself for my kids and for me," the singer — who shares two kids with her husband, Daryl Sabara — said.
In May, Trainor showed off her abs and recent breast augmentation surgery as she performed in a sparkly two-piece set at iHeartRadio's 102.7 KIIS FM Wango Tango.
