Caitlyn Jenner ‘Couldn’t Be Happier’ That Rob Kardashian’s Found Love With Blac Chyna

So sweet! Rob Kardashian has at least one family ally who is thrilled by his new romance with Blac Chyna. His former step-dad Caitlyn Jenner has given him a giant seal of approval on the relationship, HollywoodLife.com has EXCLUSIVELY learned! What a shocker! While Rob Kardashian's mother and sisters are still reeling over his hot new relationship with Blac Chyna, 27, the sock designer has at least one family member in his corner and it's none other than Caitlyn Jenner, 66. She's so stoked that he's found someone special who is helping the 28-year-old finally turn his life around for the better, HollywoodLife.com has EXCLUSIVELY learned!

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“Caitlyn couldn’t be happier for Rob. If Blac Chyna is helping him get out of a rut, then good for her and good for them,” a source tells HollywoodLife.com EXCLUSIVELY. “Caitlyn has given Rob her full support and believes that you can’t control who you fall in love with. The heart wants what the heart wants. She thinks Rob’s family should be equally supportive of him and his new romance with Blac Chyna. Move on and forget about old grudges is Caitlyn’s advice,” our insider adds.

We’ve got to give Blac credit for Rob changing his life for the better, because she’s helped him get out in public for the first time in ages. Not only that, he’s finally focusing on his health following his scary diabetes diagnosis and hitting the gym to get back in shape! If looking hot for Blac is a huge motivator for his sudden lifestyle changes, then good for them! She’s given Rob the much needed self-esteem boost to make him finally shine again.

Unfortunately, his famous sisters haven’t been so supportive. Khloe Kardashian, 31, told Rob he was no longer welcome in her home after she gave him an online warning Jan 26 to “Never go against the family,” while Kylie Jenner is beyond upset that Rob is dating her boyfriend Tyga‘s ex-fiancee and mother of his three-year-old son, King Cairo. But we have a feeling they’ll eventually come around when they see how Blac is helping Rob change his life for the better!

HollywoodLifers, do you think Rob’s sisters should be as supportive of his new relationship as Caitlyn is?