See the itinerary below.

Spears 13-year-old song entered the the Top 40 of the U.S. iTunes chart today.

Soon enough other Brit fans had joined the cause and the old song was building steam.

Justin Timberlake and Britney Spears in happier days - the 2002 Grammy Awards

Justin Timberlake and Britney Spears at the 2002 Grammy AwardsGetty Images

We are all so happy to see her song making a come back after all these years!

I still cant believe that it became so big, and we see the results we see now.

We are all so happy to see her song making a come back after all these years!

Justin Timberlake, Bobby Moynihan and Andy Samberg pose against a white backdrop in black singlets as Beyoncé and Paul Rudd stand nearby in a ‘Saturday Night Live’ sketch.

I still cant believe that it became so big, and we see the results we see now.

We are all so happy to see her song making a comeback after all these years!

Here is the itinerary for The Forget Tomorrow World Tour, announced on Fallon last night.

For additional tour information and ticket informationgo here.