Just JT.

JT only. Maybe Pink with a huge era.

None of em.

Justin sold out stadiums across Asia, Europe, Oceania, and North America in 2013/2014 so...

None of the other acts can tour with the exception of P!nk (even though she largely depends on Australia.)

That was after his comeback era though, to be fair I don't think he has the demand right now to do stadiums.

EDIT: I just checked his show list, and that tour was mostly arenas, he did very few stadiums on that tour

Her last arena tour flopped horribly. She can't do stadiums.

Both 2016 articles:

Forbes: Taylor Swift and Justin Timberlake 'Most Marketable' Musicians

Nielsen Data Proves Everyone Likes Justin Timberlake Best



The 20/20 tour was such a huge critical and commercial success that it will help his next tour.

The 20/20 tour was really successful I know, but most of his dates were arenas very few dates were stadiums.

He obliterated in Europe on The 20/20 Tour.

Justin Timberlake's Spring Run Tops Hot Tours with $77.3 Million

Justin Timberlake’s 20/20 Experience world tour heads up the weekly ranking of Hot Tours, with sales reported from its European leg that kicked off at the end of March and ran through June 10. Ticket sales totaled $77.3 million from the trek that hit 23 cities in 14 countries on the continent.

The most successful artist to debut in the late 1990s, Pink, of course