Inside Julianne Hough's Fun-Filled Bachelorette Caribbean Cruise

Now this is a bachelorette party!

Julianne Hough, who is engaged to Brooks Laich, recently set sail with and her besties, including BFF Nina Dobrev, aboard a Celebrity Cruises luxury cruise-liner for a bachelorette beachelorette trip to the Caribbean.

TheDancing With the Stars pro-turned-judge and her pals enjoyed plenty of beach time and also snorkeled through the reefs in Cozumel, Mexico, embarked on a helicopter tour above the Grand Cayman Islands and zip-lined through Falmouth, Jamaica, E! News has learned exclusively.

Hough posted on Instagram Friday a pic Dobrev took of the group. She wore a pink bachelorette sash over a white bikini.

“#JulesBEACHelorette #BitchinB4TheHitchin #HastaLaVistaHough #TheFinalHoughrrah #TheLastFlingB4TheRing #BEACHeloretteWithMyBEACHES #BeachCrew,” Hough wrote. “Thank you @celebritycruises for the gift of this amazing Bachelorette party!”

Dobrev also shared group photos on her page.

On the ship, they stayed in a penthouse suite, which featured interactive entertainment systems, a baby grand piano, marble floors, sweeping balconies, a living room, dining room, music center, a private veranda with a whirlpool and a European-style butler service. While onboard, Hough and her friends spent time soaking up the sun and sipping on cocktails.

Hough and Laich, a hockey player, got engaged a year and a half ago. They have not announced their wedding date. Bachelorette and bachelor parties are typically held no more than a month before a wedding.

Last September, Hough indicated to E! News that she and her fiancé were in the early stages of planning their nuptials.