ˌɪseɪbˈɛl kˈɑːlᵻn dˈʌfɹɛsni sˈɪks sɛptˈɛmbɚ nˈaɪntiːnhˈʌndɹɪd θˈɜːɾi fˈaɪv fˈoːɹtiːn dʒˈuːn tˈuː θˈaʊzənd fˈoːɹtiːn, nˈoʊn pɹəfˈɛʃənəli æz ˈʌltɹə vˈaɪəlɪt, wʌzɐ fɹˈɛntʃɐmˈɛɹɪkən ˈɑːɹɾɪst, ˈɔːθɚ, ænd bˈoʊθ ɐ kˈɑːliːɡ ʌv ˈændi wˈɔːɹhɑːl ænd wˈʌn ʌv hɪz sˌoʊkˈɔːld sˈuːpɚstˌɑːɹz.
Isabelle Collin Dufresne (6 September 1935 – 14 June 2014), known professionally as Ultra Violet, was a French-American artist, author, and both a colleague of Andy Warhol and one of his so-called Superstars.