Nominee Grant Gustin Flashes a Grin at Kids' Choice Awards 2018!

Grant Gustin is all smiles at the 2018 Nickelodeon Kids’ Choice Awards!

The Flash star hit the orange carpet at the event held on Saturday (March 24) at The Forum in Inglewood, Calif.

He rocked a black and white IDONTMIND t-shirt, supporting the mental health awareness campaign, as well as a red and black plaid button-up, blue jeans, sneakers with orange and green laces, and a gold necklace.

Grant is nominated for Favorite TV Actor for his work as Barry Allen/The Flash on the CW series, and The Flash is up for Favorite TV Show. Grant will also be presenting tonight.

ICYMI, hear Grant open up about how much he wants to win!

Make sure to tune in for the KCAs, hosted by John Cena, TONIGHT at 8pm ET/PT on Nickelodeon.