Update!

That Was Quick! Khloé and Lamar to Wed on Sunday

Kardashian sis and her NBA man are tying the knot sooner rather than later

By Ken Baker, Breanne L. Heldman Sep 22, 2009 3:18 AMTags

Looks like we've found someone who can keep up with those Kardashians: Lamar Odom.

Khloé Kardashian and NBA beau aren't just talking about tying the knot—they're actually doing it...this coming Sunday!

Sources confirm the date to E! News and claim that most guests (but apparently not some of his Los Angeles Lakers teammates) have already been notified over the phone, with formal invites expected to arrive later this week.

Of course, the 25-year-old E! starlet is keeping mum about the whole thing, telling us exclusively, "I can't confirm or deny…"

Still, a source close to the 29-year-old hoopster tells E! News that the couple went ring shopping over the weekend in Los Angeles and that the lucky lady found a ring that Odom bought on the spot.

"She's not wearing it yet because it is being resized," says the source.

The pair met over the summer, and Khloé confirmed the romance on Sept. 4. E! News was the first to break the news of the couple's pending engagement last week.

(Originally published Sept. 21, 2009, at 1:06 p.m. PT)

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If all goes according to plan, the Khloé will be joining Kendra and friends in the Celebrity Weddings 2009 gallery.