Meghan Trainor has a new song, and it's her clap back to people who have criticized her weight. The pop star shared a teaser of her unreleased song titled Still Don't Care on her Instagram on Monday, November 3. She shared a video of her in a full glam look in a pink outfit, vibing and lip-synching to a part of the song, singing:"You say I'm doing too much, and you're probably right / That's the same sh*t I've heard my whole life / Said I was too thick, then I got way too thin / And I try to stand out, but I wanna fit in / You're a little too loud, stretch marks on your skin / Can't believe you're still here, girl, where have you been?"Trainor further sang, leading to the chorus:"Oh, let me take a moment / Think it over, does it touch me at all? / Nope, I still don't care." View this post on Instagram Instagram PostShe said in the caption that the song has been her "inner monologue lately." And in another post teasing the same lyrics while she donned a purple off-shoulder gown the following day, November 4, she wrote that the chorus is her response. In between her two posts and teasers of the lyrics of Still Don't Care, Meghan Trainor posted a bunch of photos of her preparation for what appears to be a music video.And in her newest Instagram post on November 4, the pop star announced that her new song will be out next week on Wednesday, November 12.Meghan Trainor recently showed off her toned physique in a gym selfieDays before teasing her new song, Still Don't Care, Meghan Trainor shared her body transformation. The pop star showcased her flat stomach and abs in a gym selfie she shared on Instagram on October 29. Her trainer, Bella Maher, first shared the photo on Instagram via @malibubodies, which features the two showing off their flat tummy in a mirror selfie.Meghan Trainor at "The Paper" Series Premiere (Image via Robin L Marshall/Getty Images)She captioned it with, "Progress. Power. Peace," a post which Trainor shared on her Instagram, per Us Weekly. Maher has been sharing the pop star's weight loss and transformation for several months via Malibu Bodies' account, and in an October 25 post, she defended Trainor's use of Mounjaro, which is a type 2 diabetes drug often used as an off-label weight loss regimen. She wrote:"She did so much of this on her own before ever introducing a GLP-1, and even after starting it, the medication was simply a support, not the reason for her results. GLP-1A can be a powerful tool, but they're certainly not a transformation plan. SHE is the reason this worked."She further defended Meghan Trainor and lightly shared the singer-songwriter's dedication to her body transformation, adding that the pop star prioritized her strength training and more, and showed up even during days when she didn't feel like showing up.According to Us Weekly, Meghan Trainor started her fitness journey after giving birth to her and Daryl Sabara's second child, Barry, back in 2023. They have two sons together, with the older one named Riley, 4.