Lauren and Arie got engaged during The Bachelor: After the Final Rose special that aired following the conclusion of the show's 22nd season on ABC in March.
Arie had reconciled with Lauren in January after dumping his season's winner, Becca Kufrin, on-camera during what was supposed to be a happy-couple visit. (Arie proposed marriage to Becca during his season's finale).
Lauren and Arie previously revealed they will be getting married in Maui on January 12, 2019. They will tie the knot in front of 100 guests, without cameras rolling, according to Us Weekly.
Over the weekend-long celebration for Lauren, Arie and his bride-to-be both shared photos and videos on their respective Instagram stories. The bridal event reportedly included a boat trip with friends and a lively auction.
There were pink and white cookies featuring the couple's wedding date and engagement rings as well as champagne.
The bridal shower had a tropical theme, with Lauren wearing a white dress with a red-flower lei. A huge table was also set up outdoors with multiple centerpieces boasting orchids, lilies and more.
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"We're getting maui'd!!" Lauren captioned one image on her Instagram story, according to Us.
The menu at Lauren's bridal shower included island-style cuisine such as pineapple salsa. There were even donuts decorated to look like pineapples.