On Friday, Nick Castellanos’ sister Jacqueline shared photos from her romantic getaway with her boyfriend at Atlantis Paradise Island in Nassau. She posted several Instagram stories showing scenes from the resort, including an underwater tunnel at the aquarium and the island's marine habitat.In one photo, her boyfriend is seen admiring the aquatic views.Jacqueline wore a navy halter top with ring details and high-waisted jeans, paired with patterned heels. In another picture, she appeared in a strapless brown mesh dress that complemented the tropical backdrop of palm trees and a sunset.(Image source-Jacqueline Castellanos/Instagram)In August, Jacqueline traveled to Cartagena, Colombia, with her boyfriend. She posted Instagram photos of herself in a brown bikini and another showing the couple together on a speedboat.She captioned it, “💛💙❤️” and tagged Islas Del Rosario (Cartagena). View this post on Instagram Instagram PostNick Castellanos’ sister Jacqueline was spotted cheering him at the NLDS gameFour weeks ago, Jacqueline Castellanos posted two Instagram stories from the NLDS. Nick Castellanos scored twice, energizing a crowd of 45,000, but Philadelphia lost 4-3 and the Los Angeles Dodgers took a 2-0 lead.Jacqueline wore a custom "Castellanos 8" jacket alongside printed cargo pants and a designer bag in the stands.(Image source-Jacqueline Castellanos/Instagram)Nick Castellanos is the eldest of three siblings, including his younger brother, Ryan, and sister, Jacqueline. All three were raised in South Florida by their parents, Michelle and Jorge.In the 2025 season, Castellanos has a .250 batting average with 17 home runs and 72 RBIs.