As professional as 19-year-old Taylor Swift often acts, almost preternaturally so, there are also times when instead of her usual 19-going-on 40 she's 19-going-on-15 and it's adorable.

Watch here as she reacts to her four CMA Awards nominations as they are announced this morning on ABC's "Good Morning America."  She couldn't be that surprised by some of them, but her reaction to her Entertainer of the Year nomination is touching as she hugs her mom, who is lounging on a hotel bed with her, and calls her dad.

Entertainer of the year remains a boys club: only six female acts have won the trophy since Eddy Arnold snared the first one in 1967. The last to do so were the Dixie Chicks in 2000.  Should she win, she will be the youngest country artist  to do so.

Brad Paisley, who will repeat as co-host with Carrie Underwood, topped all nominees with six nods. The 43rd annual CMA Awards will air Nov. 11 on ABC.

Watching the CMA Announcements! from Big Machine Records / The Valory on Vimeo.