John Stamos and his son channel Elvis Presley in hilarious birthday photo

PHOTO: John Stamos holds his son, Billy, as his wife Caitlin McHugh smiles at an event in Beaumont, Calif., Nov. 27, 2018.PlayPhillip Faraone/Getty Images, FILE
WATCH Have mercy! John Stamos and son channel Elvis

John Stamos celebrated his son Billy's first birthday in the best way on Wednesday.

The "Fuller House" star channeled the "King of Rock 'n' Roll," the late Elvis Presley, in a photo shoot with the birthday boy, who wore a matching costume.

Stamos shared the snap, taken by photographer Brian Bowen Smith to celebrate the milestone, on his Instagram, captioning the photo, "One year ago tonight, our little King was born."

Stamos' famous "Full House" character Uncle Jesse was known for his love of Elvis.

The post was flooded with adoring comments from fans and friends of the actor. Stamos' wife, Caitlin McHugh Stamos, commented, "for my darling, i love you, and i always will," referencing Presley's 1956 hit "Love Me Tender."

His "Fuller House" co-star, Bob Saget, commented a lyric from another Presley song, "(Let Me Be Your) Teddy Bear."

McHugh Stamos also shared a loving tribute for her son's birthday.

"Happiest of birthdays to my one year old son! I am so grateful to be your mama," she captioned her post.