She also shared a thong swimsuit pic!
Kim Kardashian tweeted on Monday that Kourtney's party included skinny dipping, "special" brownies and nipple clamps.
The 36-year-old reality star gave fans a 'play by play' of their girls trip on Twitter on Monday night.
The reality star got super candid on Twitter, sharing insane stories from her sister's b-day beach trip.
The relationship drama between Scott and Kourtney comes to a head on Sunday's new 'Keeping Up With the Kardashians.'
It all goes down in an intense sneak peek of this week's 'Keeping Up With the Kardashians.'
The sisters are down in Tulum, Mexico, for a well-deserved girls trip.
The sisters were all smiles while hanging with friends in Tulum, Mexico.
The 'Keeping Up With the Kardashian' star jokes she is 'nipple clamp ready' on Snapchat.
This is Kourtney's look for 'one of those days.'
The 'KUWTK' star showed off her undergarments in a super see-through black garment on Thursday.
The exes were out celebrating Kourtney's 38th birthday at Disney California Adventure.
The former couple appeared to be enjoying themselves at Disneyland.
The reality star is 38 and feeling great!
