Answer:

NICO

Answer	Crossword Clue
NICO	Wilhelmina's daughter in "Ugly Betty"
NICO	Singer with The Velvet Underground in the '60s
NICO	Velvet Underground vocalist filmed by Andy Warhol

NICO	Single-named singer of the Velvet Underground
NICO	Featured singer on the Velvet Underground's debut album
NICO	One-named singer-model filmed by Andy Warhol
NICO	One-named singer for the 1960s Velvet Underground
NICO	One-named singer with the 1960s Velvet Underground
NICO	Unicorn in a 1998 movie
NICO	One-named singer for the Velvet Underground
NICO	One-named singer-actress associated with Warhol

NICO	One-named singer who was a muse for Andy Warhol
NICO	Velvet Underground's collaborator
NICO	Velvet Underground collaborator
NICO	Famous German singer-model
NICO	Singer in Fellini's "La Dolce Vita"
NICO	One-named Warhol hanger-on
NICO	One-named singer born Christa Paffgen