Adjective
stagestruck (comparative more stagestruck, superlative most stagestruck)
Enamored of the theatre, the craft of acting or of actors/actresses.
His mother, Sarah (Sadie) Glantz Berlinger (1877–1954), citation eventually became stagestruck and changed her name to Sandra Berle when Milton became famous. Source: Internet
At ten, he was already incurably stagestruck. Source: Internet