For four straight weeks the teen country star has topped the U.S. pop album charts with her sophomore album Fearless
. Now, she's been asked to be the musical
guest on this weekend's Saturday Night Live
"Something I've been dreaming about and hoping for and wishing for years... I just found out that I get to play on Saturday Night Live
," the 19-year-old wrote in her MySpace blog
. "It's my mom's birthday, and I don't think either of us would've believed you if you would've told us a few years ago that we'd get to spend her birthday in New York City - at Saturday Night Live
! Wow. It's pretty unreal."
The rising star - who had a bitter breakup with Joe Jonas
in the fall - also talked about her summer tour plans.
"I'm so, so, so excited for it to all come together," said the singer
, who was an opening act for Tim McGraw
and Faith Hill
during their 2007 Soul2Soul tour. "Yesterday, my stage designer brought over a model he made of the stage [and] I've worked up most of the musical arrangements and transitions between songs. I can't wait for you to see this show."