Carrie Underwood's secret message to Lauren Alaina

May 26, 2011 at 5:47 p.m. ET

Carrie Underwood whispered something to Lauren Alaina after their performance together on last night’s American Idol grand finale. Find out her secret message to the American Idol runner-up!

carrie underwood and lauren alaina

The grand finale of American Idol season 10 had the final contestants perform with their idols -- and Lauren Alaina picked Carrie Underwood. Underwood, who won season four of American Idol, sang her hit song Before He Cheats with Alaina.

Wearing a silver sparkly top and white shorts to show off her amazing legs, Underwood and Alaina gave a fun and energetic performance together. After they finished, Underwood was seen whispering something to Alaina. What did she say?

Alaina later told reporters that Underwood said: "Wow, that was incredible. We should take that on the road." That is a high compliment coming from the country superstar! In fact, even though Scotty McCreery took home the top prize on American Idol, Alaina said she was on cloud nine.

"I got to sing with my idol. Who gets to say they did that?! My life couldn't be any better at this point. Rehearsing with Carrie was amazing. Being in Carrie's presence was amazing," Alaina gushed.

Underwood, who has just nabbed the title of the top earner among past American Idol contestants, gave Alaina some great career advice: "She told me that no matter what happened tonight, I was still a winner, I was going to go very far in my career. She's right!"

Watch Carrie Underwood and Lauren Alaina perform Before He Cheats and tell us -- would you like to see them tour together?