For six seasons, it became one of the most copied hairstyles on the planet. Razor-sharp sides, a severe crop, and a silhouette that instantly signaled danger. The “Tommy Shelby cut” wasn’t just a look—it was a global phenomenon. Yet behind closed doors, the man who made it famous faced a very different reaction. According to Cillian Murphy, his wife absolutely cannot stand it.
Despite millions of fans idolizing the hairstyle from Peaky Blinders, Murphy has openly admitted that at home, the look is essentially banned. His wife, Yvonne McGuinness, reportedly hates the shaved sides so much that she insists he cover them up—often requiring him to wear a hat just to look like himself again.
In interviews, including a candid appearance on The Graham Norton Show, Murphy has explained why. To his wife, the haircut doesn’t read as stylish or iconic. It reads as threatening. The clean-shaven sides and hard lines make him look less like her gentle, soft-spoken husband and more like the cold, volatile gangster he portrays on screen.
“There’s Tommy,” Murphy has joked, paraphrasing his wife’s feelings, “and then there’s Cillian. And she prefers when Tommy leaves the house.”
The haircut became such a psychological marker that even their family life adjusted around it. Murphy has shared that when filming is underway, Yvonne often says they have to wait for “Tommy the asshole” to disappear before “Cillian” comes back. The hair, more than anything else, is the signal that the transformation is complete.
Ironically, the style’s origins are far from glamorous. Murphy himself has pointed out that the historical reason for the cut in early 20th-century Birmingham wasn’t fashion—it was hygiene. Shaved sides helped prevent lice among working-class men. That detail hasn’t helped him warm to it either. “It’s disgusting,” he’s said bluntly, adding that he normally prefers his hair much longer.
While the haircut drove barbershops into overdrive—British barbers reported huge spikes in requests for the “Peaky cut” during the show’s peak years—it also made Murphy’s private life harder. With the haircut, he’s instantly recognized and shouted at in public. Without it, he can ride a bus or walk through shops unnoticed. For a famously private actor, that difference matters.
Still, Murphy endured the look for more than a decade as the series ran its six-season arc and prepared for its upcoming film continuation. It was a sacrifice made for the craft—even if it meant domestic fashion warfare and constant hat duty at home.
As the Peaky Blinders film approaches, fans are eager to see Tommy Shelby return in full force, haircut included. Murphy will comply, as always. But once the cameras stop rolling, one thing is certain: the clippers go away, the hat comes out, and peace is restored.
Because no matter how iconic a haircut becomes, at home, Cillian Murphy answers to one critic only—and she is utterly unimpressed.