Katy Perry fans were dying to find out what the pop star had to reveal on her Facebook page, after repeatedly tweeting the last couple of days that she had a big announcement to make today at 4:30 p.m. CT.

So what did she have to tell us?

“I’m announcing my USA and Canadian Tour… to see all the dates go to my page,” Katy excitedly told an audience of over 7,000 fans on her live Facebook chat.

She also divulged some Grammy secrets:

The pop singing sensation has been nominated four times, but is most excited about her Album of the Year nod. She revealed that she will be performing a song she never took to the stage before.

“My grandma tunred 90 the other day and for her birthday i gave her a bedazzled cane and she is going to be acoompanying me, as her birthday present, to the Grammys,” Katy said excitedly. “My Grammy at the Grammys.”

So what did you think of the "big" announcement? What were you expecting her to reveal?