WATCH: Mama June's ex reacts to 136kg weight loss

Josephine Rozenberg-Clarke

Mama June’s 136kg slimdown has shocked the world – but no one is more stunned than her ex, Sugar Bear.

In a trailer for her reality series Mama June: From Not to Hot, the star is shown revealing her svelte new look to her former partner.

Mama June has been proudly showing off her incredible transformation. Source: We TV

The 37-year-old mother of four looks nervous as she pulls up to the home she used to share with Sugar Bear (whose real name is Mike Thompson).

The couple (pictured in 2015) were together for over 10 years. Source: Getty

He looks equally uneasy as he waits for her to get out of the car.

The slimmed-down star is nervous to see her ex. Source: We TV

We see June opening the car door, and the footage then shows Sugar saying to camera: ‘Holy s--t!’

Sugar Bear looks blown away by her new look. Source: We TV

Talk about a revenge body!

The star has lost around 136kg. Source: Getty

Mama June, who shot to fame on the hit reality series Here Comes Honey Boo Boo, has been through several procedures to transform her body – including skin removal, gastric sleeve, breast augmentation and liposuction.

RELATED: How Mama June lost 136kg
RELATED: Mama June's incredible weight loss

But her new look has come with a hefty price tag.

Her surgeon, Dr. Daniel G. Kolder, told People magazine that in total the transformation cost around $75,000 USD.

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