Karl Stefanovic underwent a hair transplant while on a six-week break from the Today show several years ago, according to his former colleague Richard Reid.
And the 44-year-old journalist may have invested in a follow-up procedure recently, if a rather telling photo taken on Saturday night is anything to go by.
Karl displayed several tell-tale signs of a fresh hair transplant at a charity fundraiser on the Sunshine Coast, including noticeably thicker locks and a suspiciously straight hairline.
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Hmm! Karl Stefanovic displayed thicker, darker hair and a straighter hairline at a charity gala in Queensland over the weekend, sparking rumours he may have undergone a hair transplant. Slide right to see what Karl looks like now, and slide left to see him in May 2015
A close inspection of Karl's hair, in particular the top and front, reveals that it looks thicker and darker than usual.
Older photos of the Channel Nine star show him with visible thinning at the front, however this is no longer discernible.
The most interesting feature is the hairline itself, which is unnaturally straight. This is considered one of the hallmarks of a hair transplant.
Changes: Karl had a natural-looking, uneven hairline in his early thirties (left, in 2007). He now has an unnaturally straight hairline, which is considered a tell-tale sign of a hair transplant
Photos of Karl dating back to the late 2000s show that he once had a natural-looking, uneven hairline in his early thirties.
But somehow his hairline has straightened itself out over the past few years, leading to speculation he may have gone under the knife.
Furthermore, Karl's once-visible widow's peak has been replaced with a more box-shaped hairline.
