I'm Norma: rely on being transformed into famous actress (7,6)
I believe the answer is:
marilyn monroe
'famous actress' is the definition.
(legendary Hollywood actress)
'i'm norma rely on being transformed' is the wordplay.
'being transformed' indicates anagramming the letters.
'im'+'norma'+'rely'+'on'='imnormarelyon'
'imnormarelyon' with letters rearranged gives 'MARILYN MONROE'.
'into' is the link.
(Other definitions for marilyn monroe that I've seen before include "US actress - Norma in my role! (anag)" , "1956 Bus Stop star" , "Norma Jean Baker" .)