Carrie Underwood & Gloria Estefan Party Post-AMAs in L.A.

Don’t get Carried away!

After winning best country album at the 40th Annual American Music Awards on Sunday, Carrie Underwood and husband Mike Fisher celebrated at Koi Los Angeles.

“They looked happier than ever. Carrie seemed overjoyed and excited throughout the evening and every time her husband made a toast,” an onlooker tells PEOPLE. “Her demeanor made it obvious to everyone – even those who didn’t catch the show – that she had taken home an important award.”

Psy to Perform (and Pick Up a Prize) at the American Music Awards

All the YouTube clicks have paid off for “Gangnam Style” rapper, Psy.

He became an overnight sensation in the United States, and now the Korea-bred artist, also known as Park Jae-Sang, is being honored at the American Music Awards on Sunday.

Psy will follow in the footsteps of DeStorm, Christina Grimmie and Karmin, to become this year’s new media honoree for his cyber success.