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Must Watch Preview:
Kris Jenner Breaks
Down in Tears, Says
She Cries Herself To
Sleep Every Night Over
Son Rob Kardashian's

Keeping Up With the Kardashians is, depending on who you ask, one of the funniest or most annoying shows on television. One thing it is not, however, is particularly emotional or poignant, but that is all about to change next week, as Kris Jenner finally addresses what we have now known for months -- Rob Kardashian is not in a good place.

In a preview for this Sunday's episode, Kris breaks her silence about her son Rob's recent troubled behavior to daughter Kim Kardashian, and explains the devastating effect it is having on her as a mother.

Still reeling over Rob's decision to skip a family trip to Thailand at the last second, and not telling anyone about his change in plans, Kris breaks down in front of the cameras and Kim, and it is painful to watch.

"It's the worst feeling in the world when one of your kids isn't in a good place," she tells Kim. "You don't think it's torture for me to be here in Thailand and have him at home?"