During last night's episode of [Kourtney and Kim Take] Piers Morgan, Kim Kardashian fessed up to her biggest splurge (house and car (s) aside) yet: a $115K watch!

Even sister Kourtney, who herself admitted to having experienced a bust-oriented wardrobe malfunction at this year's Golden Globes, responded in disbelief, stating:

"I don't do that stuff for myself...Well, I don't have as much money as Kim," adding "It's vulgar. And I have a baby that I'm, like, college and expenses…"

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