four fifths of nsync, most of british pop on thirteen days' notice, and a nickelodeon duet performed in an arena.
the short answer
the largest was one love manchester in 2017, whose bill was assembled in under two weeks from everybody who said yes. the most famous single moment is four members of nsync at coachella in 2019. on the 2026 tour, ty dolla $ign and cynthia erivo.
one love manchester, which is not comparable to anything
coldplay, miley cyrus, katy perry, justin bieber, the black eyed peas, liam gallagher, take that, pharrell, mac miller, niall horan, robbie williams, imogen heap and the parrs wood high school choir — assembled in under two weeks, on 4 june 2017, thirteen days after the attack at her own show.
coachella, 2019
joey fatone, jc chasez, chris kirkpatrick and lance bass, for tearin' up my heart — a reunion of four fifths of nsync, timed to a song of hers that interpolates one of theirs. justin timberlake was not there. nicki minaj came out on the same night, as did diddy and mase.
the eternal sunshine tour, 2026
| date | who | what |
|---|---|---|
| 16 july, new york | ty dolla $ign | safety net, from positions |
| 16 august, london | cynthia erivo | for good, and a get happy medley |
two guests across forty-one dates is a low number by modern standards, and it is consistent with how the run is built — the surprise slots have mostly gone to her own material rather than to bookings.
the one that recurs
liz gillies, for give it up — their victorious duet, performed on the sweetener world tour in 2019, seventeen years into a friendship that started in a broadway dressing room.
a nickelodeon duet surviving into an arena show is not a thing that normally happens, and it happened because the audience wanted it rather than because anybody planned it.
why there are so few
two guests across forty-one nights in 2026 is a very low number by current standards, and it is a deliberate one. a guest slot costs a rehearsal, a travel arrangement and a hole in a locked production cue sheet, and it buys a news cycle that lasts a day.
the alternative she has used instead is the surprise-song slot — two spots a night, filled with her own material, which produces the same reason to attend a second show without any of the logistics. that is a considered trade rather than an absence of offers.
questions people ask
who has performed with ariana grande on stage?
the one love manchester bill in 2017, four members of nsync and nicki minaj at coachella in 2019, and ty dolla $ign and cynthia erivo on the 2026 tour.
who was on the one love manchester bill?
coldplay, miley cyrus, katy perry, justin bieber, the black eyed peas, liam gallagher, take that, pharrell, mac miller, niall horan, robbie williams, imogen heap and the parrs wood high school choir.
did nsync reunite with ariana grande?
four of the five did, at coachella in 2019, for tearin' up my heart. justin timberlake was not there.
who has joined her on the 2026 tour?
ty dolla $ign in new york in july, and cynthia erivo at the o2 in london on 16 august.
has liz gillies performed with her?
yes — give it up, their victorious duet, on the 2019 sweetener world tour.