T PARTY: Citadium rang in its revamped Paris store on Wednesday with performances including a DJ set by British musician Just Jack. Sporting a Fenchurch T-shirt and a pair of customized sky blue Adidas trainers, Jack Allsopp seemed the perfect ambassador for the urban apparel megastore. Fed up with tour T-shirts that normally come in a choice of either black or white, he enlisted Fenchurch to produce his tour merchandise in a wider spectrum of colors. “I love T-shirts – I’ve got about 200,” he said. The 10-year-old store underwent a five-month renovation culminating in a new and expanded sneaker section on the third floor and a revamped women’s wear area on the second, among other improvements. Citadium, which is owned by Printemps, recently opened its first branch, a 3,800-square-foot men’s wear store in the Beaubourg district of Paris that previously housed the group’s Made in Sport banner.