Credit: Meg Heriot Photography

Friday – April 08, 2011 – 1:50pm

Snow bunnies rockin’ in the Rockies!

Some of the most beloved — and infamous — stars from past seasons of The Bachelor and The Bachelorette descended upon Breckenridge, Colo. last weekend. The occasion? The 6th annual reunion of show alum, as hosted by Breckenridge native Jesse Csinsak — and only Us Weekly was invited to the blowout!

EXCLUSIVE PHOTOS: Get more snapshots from the Bachelor weekend!

Us Staff Reporter Jennifer Peros joined a who’s-who of show alum for the snowy weekend: Csincsak (The Bachelorette season 4’s winner), his wife Ann Csincsak (formerly Ann Lunders, from The Bachelor season 13), Vienna Girardi (The Bachelor season 14’s winner), Kasey Kahl (The Bachelorette season 6), Mark Huebner (The Bachelorette season 5), Suzie Williams (The Bachelor season 5), Britt Billmaier (The Bachelor season 15), Sarah Newlon (The Bachelor season 11) Adam Duvendeck (The Bachelorette season 5), Brian Westendorf (The Bachelorette season 4), John Hardesty (The Bachelorette season 5), Kirsten Pittman (The Bachelor season 14), Juan Barbieri (The Bachelorette season 5), Richard Mathy (The Bachelorette season 4) and Kyle Higgins (The Bachelorette season 6)

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Arriving at a $5 million luxe ski lodge (courtesy of Paragon Lodging) on Friday, the fun-loving group skiied and snowmobiled all day Saturday and Sunday — and partied hard at night!

The hottest couple of the weekend was Vienna Girardi (Jake Pavelka‘s headline-grabbing ex-fiancee) and Kasey Kahl (who vied for Ali Fedotowsky‘s heart last year, and famously got a tattoo to prove his love). Dating for a couple months now, the duo were “very cute together” over the weekend, according to an onlooker.

PHOTOS: Sexy Bachelorette bikini bods

The cutest boy? Noah Csincsak, Jesse and Ann’s 2-month-old son, on hand for his first official Bachelor bash. (The proud parents also brought along a Siberian husky puppy).

Suzie Williams (a vet from Bachelor Jesse Palmer‘s season) had a less-then-smooth weekend: She busted her lip open while riding a snowmobile! (Luckily, no stiches were needed.)

PHOTOS: Scandalous Bachelor stars’ secret pasts!

For Saturday’s party, the crew wore seriously cozy couture: Onesie pajamas!

A few revelers extended the party by one day — not by choice, though. A huge storm rolled in Monday morning, leaving a few stranded an extra day.

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