Washington, Aug. 17 -- Ariana Grande gave fans a special moment during her London concert as she was joined by her Wicked co-star Cynthia Erivo on stage.

The two reunited to perform songs from the musical at Grande's Eternal Sunshine Tour show at London's O2 Arena on August 16, according to Variety.

Grande and Erivo performed "For Good", followed by "Get Happy/Happy Days Are Here Again". The two songs have become closely linked with their Wicked journey, where Grande plays Glinda and Erivo plays Elphaba.

According to the publication, the pair had previously performed the "Get Happy/Happy Days Are Here Again" medley during a Wicked television special in November last year. Their version pays tribute to the famous performance of the two ...