Genevieve Knight Hannelius, known professionally as G Hannelius, is an American actress, singer and songwriter. She does nail art tutorials on her YouTube channel, GbyGNailArt. In November 2014, it was announced that Hannelius was launching a customized nail-wrap app titled 'Make Me Nails' with Lauren Jones, digital marketer, in partnership with Watson Creative and MINX nails. In March 2015, it was confirmed via Instagram that Make Me Nails would be released on April 2. The day before the scheduled release, the date was pushed back to April 4 due to glitches in the app. She moved to Falmouth, Maine at age three.
She starred as Avery Jennings in the Disney Channel sitcom Dog with a Blog. She starred as Avery Jennings in the Disney Channel sitcom Dog with a Blog. Prior to this, she had recurring roles in the Disney Channel series Sonny with a Chance and Good Luck Charlie. She has also starred in Leo Little's Big Show and has done voice work as Rosebud in the Air Buddies films. She also guest starred in Disney Channel's series Jessie.