Need suggestions: High pitched female singers

Kate Wolf would be high on my list.  Any of her albums but “Back Roads” and “Close to You” are my most played  

Give Kina Grannis a listen as well.  The “Stairwells” album.

Wilson sisters, Heart.

Morgan James

Prince when singing in falsetto

Very helpful, thanks everyone.

I'll add some my daughter had when she was young

Mae Questel...the voice of Betty Boop, Olive Oyl, Little Audrey, Wendy the good witch

T.A.T.U

Believe it or not Ariel Winter from Modern Family (cartoon voice overs)

Jesca Hoop, Sixpence, Hillary Duff, Jewel, Rachel Farris, Janet Jackson, The Bangles,