Heidi Montag Parties with Crystal Harris in Las Vegas

Heidi Montag (left) and Crystal Harris

Denise Truscello/WireImage

updated 06/20/2011 AT 11:00 AM ET

originally published 06/20/2011 AT 11:10 AM ET

Heidi Montag has had her share of boy problems – so who better to lean on when you become a real-life runaway bride?

Crystal Harris, who called off her wedding to Playboy founder Hugh Hefner, 85, just days before they were set to tie the knot Saturday, kept close company with the reality star this weekend in Las Vegas, where she attended a pool party.

Trading her Romona Keveza wedding gown for a leopard print cover-up, this month’s Playboy cover girl, 25, partied with Montag, 24, at Sin City’s Wet Republic on Saturday.

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