Jessie J has been putting the age-old question of whether blondes really do have more fun to the ultimate test, while sunning herself on a birthday holiday.
Posting pics of her new blonde hair on Instagram, Jessie appears to have put the theory through a series of rigorous testing methods, including dinner with friends, sunbathing, eating cake and, the hardest of all, some serious garden frolicking.
So what's The Voice coach's conclusion? It's rather scientific so pay attention...
"I think fun is fun whatever your hair colour."
What do you think? Agree? Or has that revelation just blown your mind?
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