During her appearance, Kendall was asked how she felt about the pair's recent engagement.
"Whatever makes them happy, I'm happy," she said. "I've been friends with both of them for a very long time, so everybody's happy, and it makes me happy."
Supportive much?
Kendall and Justin Bieber actually seemed to be dating back in 2014 through to 2015, however, neither have ever admitted to it.