Chris gears up for his upcoming appointment with a plastic surgeon and encourages Tammy to tag along. Amy whips up dinner for the whole family.

As the family reels from Amanda's news about moving to Florida, Chris comes up with a plan to convince her to stay. Amy and Tammy have a night out.

Tammy and Amy beef over their big night out. Chris and Amy see a genealogist and the results make the family consider taking a trip overseas.

Everyone prepares for London amid another flare up between Tammy and Amanda. Chris and Tammy are hoping to get approved for skin removal surgery.

The family arrives in London for their first international vacation and learns more news about their ancestry. Tammy is pushed to her physical limits.

The family deals with the aftermath of Amy's meltdown. Back home, Chris gets skin removal surgery. Amy has a risqu? photoshoot.

The Slaton sisters rely on each other and food for support. Amy, 31, wants to have kids but is unable to due to her weight. Tammy, 32, is almost bedridden.

Amy and Tammy go to Atlanta to meet Dr. Procter to discuss weight loss surgery. Tammy has a hefty weight loss goal, and the dietician has bad news for Amy.

Amy and Tammy begin their weight loss journey but sticking to their diets proves to be a struggle. The pressure to reach their goals culminates in a huge fight.

After a stressful first month of dieting, the sisters head back to Atlanta for a check in with Dr. Procter. The results force Amy to make a difficult decision.

Amy decides to have a real wedding ceremony in case she doesn't survive surgery. Later, the sisters head to Atlanta hoping for a life-changing final weigh-in.

Amy undergoes gastric bypass surgery but endangers herself by not sticking to the post-op diet. And, Tammy seeks support from her love interest.

A visit to urgent care gives Amy life-changing news.

Amy is worried about dropping the news that she is pregnant.

Tammy gets devastating news from Dr. Procter.

Tammy must step on the scale again after not sticking to her diet.

Tammy's new doctor gives her a new weight goal, but it's not the only challenge she's facing. Amy and Michael drop a bomb that changes everything.

Tammy's boyfriend, Jerry, comes to visit just in time for Halloween.

In the final countdown to her due date, Amy has an eccentric photoshoot. The family worry that Jerry is derailing Tammy's diet and she reveals a secret to him.

When Tammy and Amy go see a psychic, they both get disturbing news.

Amy gets unsettling news about the birth of her baby.

While recovering from COVID-19, Tammy's weight spirals.

Lively sisters Amy and Tammy Slaton are both morbidly obese. As they continue their weight-loss journey, there are more ups and downs than ever!

Having survived yet another brush with death, Tammy recovers at rehab, but a new scare threatens her life. Plus, Amy's big surprise stuns everyone.

Tammy's good progress inspires Amy to visit, reuniting the siblings for the first time in months. Plus, Amanda begins a new chapter in her life.

Tammy hits a tipping point at rehab but then more bad news from back home sends her into a downward spiral. Plus, Chris gets a reality check.

After finding out Tammy's been robbed, Misty and Amanda visit to break the news in person. With her sisters by her side, Tammy faces the results of her weigh in.

After doing the unthinkable, Tammy tells Dr. Smith that she met her weight goal! The family worries when Amy's C-section takes much longer than expected.

Amy reels from giving birth and finding out Michael has COVID-19. Tammy worries she won't pass the final assessments she needs for surgery approval.

Tammy's weight loss surgery doesn't go as expected. Meanwhile, Amy meets with Dr. Procter and gets an ambitious weight loss goal.

A setback causes a major bust-up between Tammy and the family. A new man enters Tammy's life, and Amy feels the stress of motherhood.

Tammy reveals to her family that her wedding is only two weeks away. The family wonders if there's another reason Tammy is rushing down the aisle.

It's Tammy's wedding day! Amanda and Misty talk to Caleb about his true intentions. Amy struggles to get the venue decorated and keep her emotions in check.

Lively sisters Amy and Tammy Slaton are both morbidly obese. As they continue their weight-loss journey, there are more ups and downs than ever!

Lively sisters Amy and Tammy Slaton are both morbidly obese. As they continue their weight-loss journey, there are more ups and downs than ever!

Amy makes the hardest decision of her life after the blowout with Michael. Chris and Tammy have a long overdue appointment with Dr. Smith.

Amanda and Misty get big news and take a major step in their health journey. Amy and Tammy blow off some steam. Amy gets some devastating news from her lawyer.

Amy faces Michael in court at their first divorce hearing. Later, Tammy heads to rehab for a recon mission after learning some information about Caleb.

Caleb surprises Tammy with a romantic dinner date, but it goes south when Tammy learns what's on the menu. Plus, a Zumba class ends in a meltdown.

Lively sisters Amy and Tammy Slaton are both morbidly obese. As they continue their weight-loss journey, there are more ups and downs than ever!

Chris crosses something off his bucket list, while Tammy tries to have fun but misses Caleb. Plus, Amy reaches her boiling point and explodes.

Lively sisters Amy and Tammy Slaton are both morbidly obese. As they continue their weight-loss journey, there are more ups and downs than ever!

Lively sisters Amy and Tammy Slaton are both morbidly obese. As they continue their weight-loss journey, there are more ups and downs than ever!

Dr. Smith holds an all-sibling weigh-in, and the moment of truth is tough for some. With her recent makeover, Amy looks ahead to her new life.

Tammy needs a new place to live but finds more problems than solutions, and Amy makes a peace offering with some highly questionable ingredients.

A time for cheer is met with jeer as the entire family remains divided during Christmas, and Amy celebrates her first Christmas as a single mom.