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Kylie Jenner and Kourtney Kardashian Happily Hang With Rob Kardashian's Ex Adrienne Bailon

by Jackie Willis 1:18 PM PST, February 28, 2016
Photo: Instagram

There might be some tension between Kylie Jenner and Rob Kardashian's current girlfriend, Blac Chyna, but the 18-year-old reality star has no problem with her brother's ex, Adrienne Bailon.

On Sunday afternoon, Kylie shared a pic of her and sister Kourtney Kardashian laughing and hugging The Real co-host. "Cause we are sistersss," she captioned the photo along with music emojis.

cause we are sistersss 🎶

A photo posted by King Kylie (@kyliejenner) on

Bailon -- who dated Rob from 2007 to 2009 -- also shared the pic and captioned it with heart icons.

EXCLUSIVE: Kris Jenner Says Rob Kardashian and Blac Chyna 'Seem Great' as a Couple

Also excited to be hanging out with the former Cheetah Girl, Kourtney shared another photo of the trio, writing: "Reunited best friends lol."

Reunited best friends lol.

A photo posted by Kourtney Kardashian (@kourtneykardash) on

This rekindled friendship between Bailon, 32, and the Kardashian-Jenner sisters comes less than a week after Blac Chyna shaded Kylie -- who is dating Tyga, the father of the 27-year-old model's son -- for allegedly stealing her cooking show idea.

WATCH: Go Inside the $2.3 Million House That Kris Jenner Bought Rob Kardashian

A few days later, Rob posted a NSFW message that seemed to be in support of his girlfriend. "When the p**y so good but your family don't like her," the 28-year-old wrote. "So you drop your family and become an orphan."

MORE: Chris Brown Attacks Adrienne Bailon on Instagram, Rob Kardashian 'Likes' the Post

However, Bailon has not always been so chummy with her ex's famous family. In the summer of 2014, she outright slammed the Keeping Up With the Kardashian stars to Latina magazine.

"To be stuck with that Kardashian label, that was so hurtful to me and to my career. I probably realized that too late -- not that it would've affected my decisions in terms of who I dated, but it would've affected my decision to appear on the show," she said. "At the time, I didn't think anyone would even care. To this day, people will still say, 'You ruined Rob's life!' and I'll think, 'Damn, I was still playing with Barbie dolls when I met him.'"

WATCH: Rob Kardashian Responds to Adrienne Bailon's Anti-Kardashian Comments

Kim Kardashian defended her brother at the time, tweeting: "Funny how she says being with a Kardashian hurt her career yet the only reason she has this article is because she is talking about a Kardashian. #LetItGoooooLetItGoooooo (FROZEN VOICE)."

What a difference a few years makes!

WATCH: Blac Chyna Totally Shades Kylie Jenner Over New Cooking Show -- See the Passive-Aggressive Post

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