Mama June promises a helluva weight loss transformation on her new TV show Mama June: From Not to Hot — and a new trailer for the WEtv series is teasing just how much the former Here Comes Honey Boo Boo star has changed since undergoing surgery last year.

MORE: See the Cast of 'Here Comes Honey Boo Boo' Then vs. Now!

In the promo, fans already see the 37-year-old reality star looking skinnier than ever as she preps to shed more pounds with the help of a trainer, but also get a glimpse at everyone's favorite pageant queen, Honey Boo Boo (aka Alana Thompson), who has grown quite a bit since the last time we saw her!

Scroll through the gallery below for more photos from Mama June's upcoming show!