Carly Rae Jepsen Nervous About Justin Bieber's 'Believe' Tour Support Slot

31 July 2012, 13:15 | Updated: 31 July 2012, 13:33

The 'Good Time' singer says she has not idea what to expect when supporting Justin on tour.

Carly Rae Jepsen has admitted she is started to feel nervous about being Justin Bieber's main support act on his upcoming 'Believe' tour of North America.

The 'Call Me Maybe' singer will join the Canadian pop star across all of his North American tour dates from next month, and says she it still doesn't feel real.

"I don't know what to expect!" Carly told MTV News this week. "I did one or two shows with Justin. One in London and one in Mexico City and all I can say is, like, 'Wow'.

"They were huge - 300,000 people in Mexico City, I was speechless."

The 'Good Time' singer also admitted she doesn't feel she has managed to process her huge chart success over the past several months yet.

"I think that like in 10 years' time I'm gonna sit back and look at everything that's happening to me this year and actually have a 'whoa' kind of moment," Carly explained. "Right now everything's so fast and the pace of it so quick that I'm just kind of keeping my head to the ground and trying to do the best at getting through it."

View a picture of Justin Bieber and Carly Rae Jepsen at the Teen Choice Awards 2012 earlier this month below (Credit: Twitter):

Carly recently confirmed she has recorded a duet with Justin for her debut album, but is "sworn to secrecy" on details about the collaboration as they want to announce it together.

The Canadian singer's debut record is also set to feature team ups with the likes of LMFAO's Redfoo, indie pop band Fun. and recent collaborator Owl City.

Justin Bieber's 'Believe' tour of North America officially kicks off with a show in Glendale, Arizona on 29th September.