Nicky Hilton celebrated at her bachelorette party over the weekend.

The 31-year-old designer spent time with 34-year-old sister Paris Hilton and several friends ahead of her wedding to fiancé James Rothschild.

Hilton and her sister shared several photos from the fête on Instagram, with the latter writing, "#NickysBachelorette is ready to rock Miami! Let the celebrations begin! #MrsRothschild."

The group enjoyed a boat tour aboard the S.S. Groot before partying at Wall nightclub at the W hotel Saturday. Hilton had custom "Hilton Bridesmaids" hoodies, hats and sunglasses made for her friends.

Hilton and Rothschild got engaged in Aug. 2014, and will marry at Kensington Palace in July. The designer was briefly wed to Todd Meister in 2004, and subsequently dated actor Kevin Connolly and producer David Katzenberg.

Hilton and her sister are daughters to Richard and Kathy Hilton, and great-grandaughters to Hilton hotels founder Conrad Hilton. The pair have two younger brothers, 25-year-old Barron Hilton II and 21-year-old Conrad Hughes Hilton III.