Mama June is a whole new woman!

The former Here Comes Honey Boo Boo star made her return to reality TV with her WEtv show Mama June: From Not to Hot which premiere on Friday, Feb. 24 — and even though fans still have yet to see her big reveal, she definitely feels great after her 300-pound weight loss.

“[June “Mama June” Shannon] feels like a new woman since shedding all that weight,” an insider told Hollywood Life. “She’s actually grateful to [Mike “Sugar Bear” Thompson] for spurring her on to get fit — if he hadn’t announced he was getting married she wouldn’t have been so motivated to slim down so radically. June’s loving her new body and new life — she feels sexy, and flirty, and hot. She’s got a whole new lease on life and feels better than she has in years.”

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MORE: ‘Here Comes Honey Boo Boo’ Star Mama June Throws Shade at Ex Sugar Bear

During the series premiere of her new show, Mama June revealed that the reason she decided to undergo a drastic weight loss transformation is because she wanted to get revenge on her ex after he announced that he was getting married to another woman.

The former couple was involved in a common law marriage for more than a decade — and they share 11-year-old daughter Alana “Honey Boo Boo” Thompson together — but she dumped him after he revealed that he had cheated on her with multiple men and women in the past during their stint on Marriage Boot Camp: Reality Stars.

“It isn’t like I want Sugar Bear back or anything, but I’m not ready to see him with anybody else either,” she said in her confessional.

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MORE: Mama June Reveals Her Best Diet Tips — Find out How She Slimmed Down!

But even though her new show is all about her getting her body and confidence back after a breakup, fans were upset with Mama June. During the premiere, viewers noticed that it looked like she was wearing a fat suit in order to exaggerate her weight loss.