Rosalind in As You Like It, RSC Stratford and Aldwych, summer 1967, then at the Ahmanson Theatre, Los Angeles, January 1968
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Leavel starred in the world premiere of the burlesque-rich musical Minsky's, in Los Angeles which ran at the Center Theatre in the Ahmanson Theatre from January 21 - March 1, 2009; the musical also starred her former Young Frankenstein co-stars Christopher Fitzgerald and Sarrah Strimel.
In January 2009, Nicholaw was both director and choreographer of the Los Angeles debut of Minsky's, a musical based on the 1968 film The Night They Raided Minsky's, at the Ahmanson Theatre.
She has worked extensively both in the West End and on the Fringe, and has appeared in the US in several productions, including Richard III and An Enemy of the People opposite Sir Ian McKellen, Athol Fugard's The Road to Mecca, Terence McNally's Master Class, Stephen Sondheim's "A Little Night Music" (San Francisco Bay Critics' Award), and most recently Alan Bennett's "History Boys" at the Ahmanson Theatre in Los Angeles.
Two of his campaigns for The Music Center raised more than $240 million for the construction of the Walt Disney Concert Hall and renovation of the Ahmanson Theatre.