TRIUMPHANT KELLY KEEPS THE KIDS!

Ex-hubby Brandon gets bučks but is booted from ranch

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GLEEFUL Kelly Clarkson got the ultimate I husband Brandon Blackstock — despite being forced to fork over major dough — because she scored a sweetheart custody arrangement and left the bitter former talent manager's career in shambles, insiders dish.

In L.A. court papers finalizing their contentious divorce, the “Miss Independent" singer won her bid to enforce the couple's 2013 prenup — but Brandon won't leave the marriage empty-handed!

Her former manager will walk away with a one-time $1.3 million payout, $115,000 a month in spousal support until January 2024, and $45,000 a month in child support for their kids — River Rose, 7, and Remington, 5.