John Fetterman has been compared to Walter White after shaving his signature goatee into a mustache after losing a bet with his 13-year-old son.

The Democrat, who made headlines with his six-week hospitalization for depression, tweeted the shot of his new look on Saturday morning.

'Lost a bet with Karl,' Fetterman said, referencing his son. His wife, Gisele Baretto Fetterman, later tweeted that the bet was over a game of chess between the two.

Fetterman's wife appeared to approve of the new look but couldn't help joking: 'I never knew he had a chin' captioning a photo of the two on 'date night.'

She added a screenshot of a text message from Fetterman showing off the mustache, to which she responded 'I'm into it.'

Democrat Senator John Fetterman debuted a new look on Saturday that he literally sported because he lost a bet with his 13-year-old son - and has people drawing comparisons to Walter White

The photo drew comparisons to a lot of real and fictional mustachioed men, including Bryan Cranston as Walter White in Breaking Bad

Others on social media noted that he resembled various celebrities, with one making the comparison to Bryan Cranston's famous role as Walter White in Breaking Bad.

'Got a bit of Walter White there, useful for negotiations,' said one approving reaction.

When one Twitter user suggested 'You look like a Shop teacher. Just saying,' another succinctly replied 'more like a chemistry teacher.'

Cranston's Walter works as a chemistry teacher before diverting to sell meth to try and keep his family whole while dying of cancer.

'You can now go as G. Gordon Liddy for Halloween,' added another commenter, referencing the infamous former FBI agent.

A more friendly commenter joked that Fetterman 'beats Dr Oz, flexes and turns into Dr Phil.'

Fetterman dispatched with daytime TV doctor Mehmet Oz in a November 2022 election.

The senator was profiled for a cover story for Time magazine this month and said it was his debate against Republican Senate hopeful Mehmet Oz that led to his depressive episode.

Fetterman (seen here in May), who made headlines coming forward about his six-week hospital stay for depression earlier in 2023, posted a tweet showing him with his traditional goatee shaved off, leaving just a mustache

Fetterman's wife appeared to approve of the new look but couldn't help joking that 'I never knew he had a chin' captioning a photo of the two on 'date night'

He even revealed that he recorded a goodbye message to his children after suffering a stroke last spring.

The senator is still suffering from auditory processing issues 14 months after the stroke.

While the debate against Oz was a breaking point, the January suicide of New York Times journalist Blake Hounshell - who Fetterman knew personally - hit Fetterman hard and contributed to his decision to seek help.

Just days before the Democratic primary, Fetterman encountered his first major challenge in a year's time - the stroke.

On the campaign trail near Lancaster, Gisele noticed that her husband's face started slumping and drove him immediately to a hospital.

The bet involved a game of chess between Fetterman and his 13-year-old son Karl

He easily won the Democratic primary and spent the day of his victory anesthetized, having a pacemaker installed.

Time reported that Fetterman recorded a video message to his children - Karl, 14, Grace, 11 and August, 9 - in case he died.

Fetterman stayed off the campaign trail for most of the summer to recover from the stroke.

By August, however, he had returned and was able to get through a standard stump speech, making some mistakes, but the debate was the event that really highlighted how much progress he still had to make to make a full stroke recovery.

Despite the debate performance, Fetterman beat Oz, the Trump-backed TV doctor, by five points.