Binky and Cheska appeared on the My Super Sweet 16 spin-off in 2011 and were followed by the cameras as they organised a Hollywood-themed party.
The girls told viewers that they were "best friends", with Binky adding: "I actually don't think I could live with anyone else, but she has to get her own way. She's a bit of a princess."
Cheska also explained: "A Chelsea girl is cool, elegant and definitely spontaneous."
In the episode, Binky and Cheska met with a fashion stylist and dressed up as Audrey Hepburn and Marilyn Monroe for a photo shoot.
They also took party in a Burlesque dancing lesson with giant feather fans, ahead of their plans to perform in front of their guests on the night.
Unfortunately, it all got a bit too much for poor Binks and she broke down in tears after failing to master the steps. Oh dear!
Are you enjoying this series of Made In Chelsea? Tell us below, as the best comment from across the website each week wins £50.