How to elope? Just leave it to Lamas. …

Reality show star Shayne Lamas, of Leave it to Lamas, ditched The Bachelor’s Matt Grant (who might be a giant) just three months after she won the final rose on national television.

Shayne & Nik tie the knot.

But Sunday, she needed neither camera crew nor rose when she tied the knot at Sin City’s Little White Wedding Chapel — after just one date — with blogger Nik Richie of TheDirty.com.

Shayne confirmed the marriage on Twitter saying, “Wife,” while Nik tweeted, “Married.”

The couple took advantage of the chapel’s $519 “Michael Jordan Package,” which features a DVD of the event and 36 professional photos, then partied down at Vanity in the Hard Rock Hotel.

But this weekend, Nik won’t be in Vegas. He’ll be right here at D.C.’s Shadow Room, hosting an official “The Dirty” party with Vegas DJ D Miles and Ari Golden (his fearless agent).  [Tickets / More Info]

And so, I must pop the question: Where goes the bride this weekend?

We hope Shayne will be there, standing by her man, er, groom in the VIP — because that’s where we’ll be; wearing white in her honor.

And, it doesn’t get any dirtier than that.