The reality stars were surrounded by family and friends for a night to remember, full of dancing, music and sweet treats.
"this photo was taken shorty before we tore up the dance floor so much fun finally celebrating @lauren_bushnell & @higgins.ben engagement ?," Lauren's sister, Mollie Bushnell, wrote on a photo of her with some other family members at the event.
While in Oregon, Lauren spent some extra time with her friends and did a gorgeous outdoor photo shoot.
"Had so much fun yesterday with these babes," the season 20 winner captioned an adorable BFF shot.
The shoot's photographer, Haley Graham, also shared a few snaps from the day, in which the future bride wore a LOT of white.
"Spent my morning shooting with the forever kind and beautiful Lauren B.! ? You guys can probably guess that I'm obsessed with this shoot already so 2 more peeks coming up,"Graham wrote on the first of three images.
In two of the shots, Lauren is wearing a full-length, white lace gown. The third pic shows the flight attendant in a more casual look, rocking cut-off jean shorts, a white tank and matching white choker.
Although this shoot was all about the bride-to-be, Lauren will be sharing the spotlight with her fiancé on their own reality show called Ben and Lauren: Happily Ever After, beginning in October 2016 on Freeform.
To see what's in store for the new series, and what the couple is worried about when it comes to the show, watch the exclusive video below.