Is Nick Jonas the ultimate bachelorette party planner? Page Six has exclusively learned that his wife, Priyanka Chopra, and Joe Jonas‘ wife, Sophie Turner, were in Las Vegas on Friday to celebrate the bachelorette party for Helena Cassilly, the fiancée of Jonas Brothers drummer Jack Lawless. While the men were throwing Lawless’ bachelor party at the Mayfair Supper Club at the Bellagio, we’re told Nick recommended the ladies hit up the male striptease show “Thunder From Down Under” at the Excalibur to give Helena her send-off from singledom. More than a dozen women attended the beefcake-studded party, where at one point, the shirtless hunks pulled Helena onto the stage from their VIP table. “They had a terrific time. They were getting really into it. They stood up and were cheering,” a spy told Page Six on Monday. “Priyanka was a little bit more reserved and had never seen anything like it. Sophie was standing up and taking pictures and they were cheering for Helena.” We’re also told the group, who was protected by bodyguards, showed up a few minutes late and left just before the show was finished — but not before they received Jell-O shots and 2020 “Thunder From Down Under” calendars. Though Chopra and the “Game of Thrones” star didn’t agree to take photos inside the show, they were happy to pose for one in the lobby of the hotel.