Lizzo’s all about cutting off bad vibes ... and she's throwing her hair into the mix too, 'cause the singer hit reset and said goodbye to her long locks with a fresh new chop.

The singer debuted the look on TikTok Friday, first flexing her natural hair before shaking things up with a slick transition to a short, honey-blonde bob -- and honestly? It’s straight fire!

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Lizzo looked flawless, with her makeup fully dialed in to match the glow-up ... and she made sure to keep the flex going by showing it all off in a series of IG snaps.

She even held up her freshly chopped locks for the camera and dropped a selfie mid eyebrow-bleach, clearly locked into full transformation mode.

Honestly, it all tracks -- reinvention’s been her whole vibe lately. Over the past year, she’s been confidently showing off her weight loss after shedding 16% of her body fat. Looking good, Lizzo!