Kate Gosselin celebrated her 40th birthday back in March, but on Tuesday, June 23, fans will get to see the reality star’s sunny Mexican getaway with her eight children. Related: PHOTOS: Celebs ...

The "Kate Plus 8" matriarch showed off her fit figure in a cleavage-baring, colorful two-piece while celebrating her 40th birthday in Cancun, Mexico on a special episode of the TLC show Tuesday night.

While Kate and Jon Gosselin have since divorced, both parents can hardly believe that their youngest kids are teens. ... "I wanted to give myself the best 40th birthday present ever.

Alexis and Leah taking a selfie at the birthday celebration. Kate Gosselin/Instagram. Someone else added: “Gosh time flies, I remember watching the show.