Leah's most famous stage role so far is Vindra, the heroine in The Awakening of Spring. /kloc-at the age of 0/5, Leah began to play this role. When Leah was 20 years old, The Awakening of Spring was officially changed from off-Broadway production to Broadway production, and began to perform on Broadway. This musical swept seven awards at the Tony Award that year, which brought great applause and praise to Leah. Leah was also nominated for Best Musical Actress in the Drama Award for her role as Vindra. In 2008, Leah and the hero jonathan groff (also her best friend) left the cast of Wake Up in Spring.
In 2009, Leah began to play the heroine Rachel Berry in Glee, which won her a Golden Globe Award and an Emmy nomination respectively, which opened a new peak in her career.