"I'm so proud of my sisters, but I'll be married before I have a baby," Rob said while hosting the CIROC Vodka New Year's Eve countdown at STK Miami on Monday.
Another of Rob's famous sisters, Kourtney, still hasn't walked down the aisle with Scott Disick, the father of her two kids. The couple is raising son Mason, 3, and daughter Penelope, 6 months, together.
Although Rob has a "married first" policy for himself, he didn't seem too concerned about Kayne proposing to Kim. "I think everyone is just excited about and focused on the baby right now," he said.
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"Kim and Kayne are over the moon happy. I'm so excited to be an uncle again!"
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