debutant
/dɪˈbyuːntənt/Definitions
1. noun
A young woman making her first public appearance, especially in high society, at a social event such as a ball or a party.
“The debutant was introduced to the guests at the charity gala.”
2. noun
A person who makes a first appearance or performance in a particular field, such as music or acting.
“The debutant pianist performed a flawless rendition of Mozart’s Piano Concerto No. 23.”