Ariana Grande and Cynthia Erivo reunited onstage in London for their first performance together in months, giving fans an emotional Wicked reunion during Grande's Eternal Sunshine tour.The pair surprised their fans with a reunion performance at the second stop of Ariana Grande's Eternal Sunshine tour in London.Erivo performed For Good in the encore along with Grande before performing Get Happy/Happy Days Are Here Again medley.The lifelong friends hugged each other at the end of their performance to the delight of the audience.This performance marked the first time in which Ariana Grande, 33, and Cynthia Erivo, 39, performed in tandem since Wicked: One Wonderful Night in November.They starred as Glinda and Elphaba, respectively, in the two-part Wicked movie and sang the same songs for the special event.`Ariana Grande addresses "noises" following her public hiatus announcementTheir London reunion comes as Ariana Grande prepares to step away from public-facing work following the tour's completion. The pop star's rep said that Grande intends to "take a step back from visibility" following her Eternal Sunshine tour."Ariana will be taking a step back from visibility after she completes the Eternal Sunshine Tour. She looks forward to finishing the tour and ending it on a high note, both healthily and happily, and then taking a much-deserved break from public-facing work and appearances, which has led to endless, ongoing public scrutiny. This tour has been a beautiful experience for her. She loves her fans and has loved every minute of this tour so much."Ariana Grande later addressed the decision during a concert in Chicago, explaining that her planned break had been in the works for some time and was not a response to recent criticism or online discussion surrounding her."Sometimes when a story comes out that’s not directly from me, things can be a little blown out of proportion so I just wanted to speak to my fans directly tonight because I love you so much. It means a lot to me to let you know how I’m feeling and not let the world project… I would just like to clear the air about a few things if that’s okay."The thank u, next songstress continued, explaining that her hiatus announcement was "not a reactive or impulsive thing." She added that it was a plan she had quietly made."I want to share this because I heard that my fans were worried that negativity was ruining things for me, but I just have to say that could not be more the f****** opposite. This is not what that is. I just want to be very, very clear.""Wicked: Part One" European Premiere - Arrivals - Source: GettyAriana Grande went on:"I have one more thing to say! No matter what noises exist out there, nothing will ever be able to distort my reality or be more real to me or louder to me than this love that we share in this room. Or how it feels to make art with the people that I love and respect."The artist began her latest London performances on Aug. 15 and is scheduled to perform 10 shows at the O2 Arena before the tour ends Sept. 1.The singer also recently made her relationship with Ricky Alvarez Instagram-official. She shared two photos featuring her on-again boyfriend, giving fans another personal update alongside her busy run of London shows.