Jackie Evancho Explains Decision to Perform at Donald Trump's Inauguration

Evancho, 16, will sing the national anthem at Trump's inauguration.

"I have a lot of positivity from my family and that’s really what matters to me," Evancho, 16, said today on "Good Morning America." "All of my true fans have been there for me and supportive and that’s really all I need, so I’m sticking to it."

Some critics of Evancho's participation cited the incoming Trump administration's record on gay rights because Evancho has a transgender sister.

Evancho said her sister, Juliet, will not be attending the inauguration because she "has personal things going on right now."

"I wish I could be there for her, too, and she wishes she was here for me, but we’re there in spirit," Evancho said.

Evancho also performed for Trump at an event earlier in her career.

"When I met him he was extremely polite, very nice and thankful for me to be there and perform for him," she said. "I mean, it was a great experience."

ABC News' Luchina Fisher contributed to this report