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Regardless of what you think of crystals, Kathryn Gallagher can make you a believer. The 28-year-old is best known for her Tony-nominated role as Bella Fox in the Broadway musical "Jagged Little Pill." Gallagher has also appeared in the "Gossip Girl" reboot and "You." Adding to her multi-hyphenate status is her role as a co-founder of Vibes Metaphysical Supply Store, an online crystal store -- and she credits #WitchTok as a catalyst for the creation of the business.