Wallace appeared in the original Broadway casts of Aladdin (2014) and Something Rotten! (2015) as a member of the ensemble and understudy. In January 2017 she became an alternate Effie White in the West End production of Dreamgirls. Following the departure of Amber Riley from the production, Wallace took over the role, sharing with Karen Mav and Moya Angela. In 2017, she released a Christmas album called Soul Holiday. In 2019, she joined the original London cast of Waitress as Becky. In Summer 2021 she starred in the London Coliseum production of Hairspray as Motormouth Maybelle opposite Michael Ball. For this role she was nominated for the 2021 Black British Theatre Awards as Best Female Actor in a Musical.
In 2022, she played Ado Annie in Oklahoma! at the Young Vic, a performance which garnered her an Olivier Award nomination for Best Actress in a Supporting Role in a Musical.
Wallace is the singing voice of Ms. Johnston in Jingle Jangle: A Christmas Journey on Netflix.
In March 2024, Wallace entered the Celebrity Big Brother house to compete in the twenty-third series.
In August 2024, she appeared in a concert staging of Something Rotten! at Theatre Royal, Drury Lane.
In September 2024, she made a special guest appearance during concerts by Alex Newell at Cadogan Hall. In December 2024, she made her debut in pantomime as the Sheriff of Nottingham in Robin Hood at the London Palladium.
Between January and May 2025, she starred in Cabaret at the Playhouse Theatre as Sally Bowles, alongside Billy Porter as The Emcee.
On 24 April 2025, she received her British citizenship.
Marisha Wallace has appeared on Broadway in 3 shows.
Marisha Wallace has appeared on London's West End in 7 shows.
Marisha Wallace's first West End show was Dreamgirls which opened in 2016
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