Gary Dourdan's Girlfriend -- Butt-erly Amazing

6/7/2010 4:30 PM PDT BY TMZ STAFF
We've finally figured out the best thing about former "CSI" star Gary Dourdan -- his unbelievably hot girlfriend's perfecter-than-perfect backside.

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Gary and Maria Asis del Alamo were showing off what their mommas gave them this weekend while on the island of Formentera.

Well done, sir ... well done.