The inking is a replica of a photo of Smith, 21, while she was on Strictly Come Dancing in 2020.
The tattoo, which also had a lion alongside Smith’s face, was done at INK’d in Fulham and proudly debuted by the 34-year-old The Wanted singer on social media.
The over the top gesture is not the first of its kind for George.
He previously had an inking of ex-girlfriend Stacey Giggs’ tattooed on his wrist and following the split got it covered up with a rose and lion.
Former EastEnders actress Smith recently revealed that George was her "childhood crush".
That would’ve made her just nine-years-old when The Wanted, whose other members are Siva Kaneswaran, Jay McGuiness, Nathan Sykes and the late Tom Parker, released their first single in 2010.
George’s new tattoo comes as the pair have been involved in a row with television presenter Ulrika Jonsson after she launched a scathing attack on George for giving her the middle finger when she criticised Smith.
Jonsson, 55, hit out at the actress after she recently shared a social media video of herself crying with the caption: "You didn’t deserve me".
The post sparked speculation that Smith and George had split and she was referring to him.
Jonsson slammed the move as "nonsense", "self-indulgent" and "very dramatic".
George took to his Instagram page and gave Jonsson the middle finger to which she hit back by slamming his alleged and reported cheating on ex Stacey Giggs.
In August, Giggs accused George of cheating on her with Smith.