Among those recently snapped unchained are Nadine Coyle, Jennifer Aniston, Emma Watson and Peaches Geldof.
Should we all follow their lead and bin our boulder holders? Given the latest research, perhaps we should - for our own good.
Some experts now say wearing a bra has no real benefits and can even cause health problems if fitted incorrectly. Tim Hutchful, from the British Chiropractic Association, says: "Bras that are too tight or too big can cause posture problems, including neck pain, shoulder pain and even tingling in the arms."
Nearly 70 per cent of UK women wear the wrong bra size.
He adds: "Many may think they're, say, a 32D, when the reality is they're a 36E."
Tight bras have been associated with cancer risk, though this theory has been losing ground.
Martin Ledwick, from Cancer Research UK, says: "Applying pressure to cells will not make them turn cancerous.
"It has been suggested that a tightly fitting bra may prevent lymphatic drainage from the breast, but restricting lymphatic drainage is not a known cause of cancer.
"A bra would need to be unbearably tight for lymphatic drainage to be restricted."
But would going braless cause back problems, and make our boobs head south?
It is NOT bad for your posture, says Tim, although it may prove slightly painful if you're as buxom as Jordan. "If you're a small-breasted woman, wearing a bra won't make much difference. But if you are bigger breasted then it may affect your posture."
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As for sagging, experts believe bras make no difference - drooping is due to natural changes in the skin that occur with age.
The only time experts advise strapping boobs down is during exercise to avoid stretching a vital ligament.
But why have celebs decided to shed their underwear?
Psychologist Cary Cooper from Lancaster University believes it's a rebellion against the WAG look.
"It's about wanting to look more natural," he says. "It's about saying, 'I'm not going to be a Barbie doll - I'm going to be a natural woman'."
source; www.thesun.co.uk
