Mama June Shannon's "revenge body" is well under way.
In a preview clip from Friday's episode of Mama June: From Not to Hot on WE tv, the mother of four gets serious about her workouts, and vows not to step on the scale for the next eight weeks, per the instructions of personal trainer Kenya Crooks.
WATCH: Mama June Accused by Fans of Wearing a Fat Suit to Exaggerate Weight Loss on Reality Show
"No more messing around, it's time to go to work, baby," Mama June proclaims. "You know, I'm going to have to give Kenny some credit. I've never felt this good before."
As for her diet, the 37-year-old reality star reveals that she's "finally off this liquid diet and eating real food."
"Eating healthy gives me a lot more energy," she adds, "Which makes me work out harder and makes me lose the weight faster."
WATCH: Mama June Shows Off Shockingly Slimmer Figure as She Heads to Gym
After weeks of strenuous workouts and eating right, Mama June nervously steps on the scale in hopes that she's under 220 pounds.
In another preview clip for the reality show, Mama June, who says she's a size 18 at the time, chats with Crooks about her desire to fit into the size four dress she got to wear to her ex Mike "Sugar Bear" Thompson's wedding. "I wanna be the hottest thing at this wedding," she tells her trainer. "I'm honestly scared, because I don't know if I'm going to be able to reach my goal or not."
WATCH: Mama June Picks Out Skin-Tight Size 4 'Revenge Dress' for Sugar Bear's Wedding
While the show has yet to reveal Mama June's full transformation, she does try on some wedding dresses on this week's episode that showcase her weight loss. Slipping into a size 12 gown, Mama June exclaims, "Wow, got my little hourglass figure going on."
"I may not be wanting to get married, but damn, I look mighty hot in a wedding dress," she quips.
EXCLUSIVE: Mama June's Weight Loss Surgeries Revealed -- How She Went From 460 Pounds to a Size 4
When ET spoke exclusively with Crooks, and Mama June's two daughters, Alana "Honey Boo Boo" Thompson and Lauryn "Pumpkin" Shannon, they revealed that Mama June had gone from 460 pounds to wearing a size four.
"I ain't trying to be like R-rated or anything, but she walks around the house in a pair of her underwear now, so...," Pumpkin joked. "Uh huh. I'm like, 'June, put some pants on! Put some pants on!'"