1000-lb Sisters

Tammy and Amy attempt to renew their sister bond; the family has strong opinions about Amy's new hobby; Andrea makes a drastic decision about her relationship with Tammy; Chris is making gains in and out of the gym.

Tammy meets Andrea's friends in hopes they'll have a better reaction to her engagement than her family; Amy's riding high after getting good news about her weight loss, only to get shot down by her older siblings.

Tammy and Andrea take the first step toward wedding planning. Amy confronts the elder siblings about what went down on New Year's Eve. Chris and Brittany get shocking health updates.

While the older siblings try to mend fences with the younger ones, Tammy is less forgiving. Tammy and Andrea do a double date with Amy and Brian, but Brian's misgivings about Tammy make things awkward. Amy makes a big decision about her healthy journey.

Amy finally steps into the recording studio, but life throws her a curveball. Chris and Brittany get some answers on their first steps toward parenthood. Tammy and Andrea's relationship goes under the microscope while in therapy.

Amy and Tammy start their driver's license journey on the wrong foot. Chris and Brittany get unexpected news about their pursuit of parenthood. Tammy isn't ready to let go of her gripe with Misty.

Andrea and Tammy get bad news about their wedding. Chris and Brittany try to add some spice to their relationship. Amy's opportunity of a lifetime may tear the family apart as Tammy makes a surprise request.

The older siblings are left reeling after being uninvited from Nashville by Tammy. While Amy gets closer to her music dreams, Tammy's hope of sister bonding may be falling apart.

Amy steps into the spotlight in more ways than one as she prepares for her first time on stage. Andrea shares a surprising health update with Tammy. The older siblings draw a line in the sand.