The MANE attraction! Gordon Ramsay sparks new hair transplant rumours with questionable hairstyle at Victoria Beckham's 40th birthday meal in Mayfair

Published: 03:57 EST, 28 April 2014 | Updated: 09:01 EST, 28 April 2014

He was famously spotted leaving a hair transplant clinic in Los Angeles in 2011.

But Gordon Ramsay's latest look has sparked fresh rumours that the no-nonsense celebrity chef has undergone follicular surgery.

The 47 year-old attended Victoria Beckham's 40th birthday meal at The Arts Club in London's Dover Street on Sunday sporting a brushed-forward fringe and seemingly shaved back and sides.

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Gone today, hair tomorrow? Gordon sported a full head of hair in a different style in April

Hair-raising! Gordon displays his new look while attending Victoria Beckham's birthday party at The Arts club in London

The back of Ramsay's head also looked to have been covered in some sort of camouflage substance, perhaps a fibrous spray to give the illusion of hair density.

Normally, Gordon's blonde hair is worn with a spikey fringe, so the look is certainly a diversion from his standard style.

Suspiciously, the line between his shaved hair and his longer growth isn't blended, which will further raise suspicions.

Hair we go! Gordon Ramsay sports a very bizarre haircut as he dines out in Mayfair last month

Normally, if men undergo follicular unit extraction - or FUE - surgery, they are forced to shave part of their head in order for doctors to successfully access the roots, although surgeons such as Dr Reddy in London's Harley Street offer the procedure without this drawback.

Previous men who have had such procedures include James Nesbitt, who was treated in Ireland, and Wayne Rooney.

That's a close shave! Gordon shows off some seriously short hair at the party on Sunday

Hair loss expert Spencer Stevenson, who spent £30,000 on five different transplants before finding success with a surgeon in New York - and who now hosts The Bald Truth UK radio show - told MailOnline:

'He looks like he is attempting to mask the back of his head - the donor region - with a hair concealer in order to cover the extraction site of a very recent FUE procedure, which leave numerous tell-tale red dots.

'I can't be certain, but I would also assume that Ramsey's long fringe is combed forward to cover the recipient area where he has had work performed.

'Thankfully, hair transplants have become much more mainstream with celebrities such as Robbie Williams speaking publicly about their own procedures, but research into ethical clinics is vital.

'There are only several doctors in the world I would personally trust as well as the clinics I represent: Dr Feller in New York, Dr Lindsey in Virginia and Dr Feriduni, who is based in Belgium.'

Fringe benefit? Gordon Ramsay and Tana Ramsay step out on Dover Street

Previously, in January 2011, when Gordon was snapped leaving a specialist hair centre in Beverly Hills, he was wearing a black surgical-style cap on his swathed head.

He also sported an incredibly puffy face, suggesting he experienced an allergic reaction. Transplant patients can experience swelling which can work itself from the head to the bottom of the face.

But Gordon claimed otherwise, blaming it on a run-in with illegal fishermen and an allergic reaction to horses. According to Metro, the chef said he was covered in petrol while filming illegal shark fin fishermen for a Channel 4 show.

‘I had petrol doused, gasoline poured all over my hair and I had a horrific infection,’ he claimed.

'Then, I was in Napa for Christmas two weeks after the shoot and went riding with the kids, and had a horrendous allergic reaction to the horses, combined with the problems I had with my scalp, so it was just a hair nightmare,’ he said.

His usual look: Gordon in a promotional shot for his TV series Behind Bars with Gordon Ramsay

Fortunately, he looked much healthier at Victoria's party. Wearing a blue shirt with black trousers, Gordon appeared smart-yet-casual as he left the exclusive Arts Club with wife Tana.

Clearly keen to be discreet, he let her lead the way into a waiting vehicle. Tana, a successful cookery author, looked svelte and stylish in a pair of leather-effect trousers and black vest top with bright yellow shoes.

Proving that she has her own impressive mane, she wore her brown hair down in a loose, free-fall style.

Cooking up a storm with that new haircut! Gordon leaves the party looking pleased with himself.

This isn't the only time the couple have celebrated Victoria's big birthday.

They dined with the Beckhams in Los Angles restuarant Nobu, last Thursday, then went hiking with them in the Grand Canyon.

The restaurant is situated on the edge of town, right next to the ocean, and the superstar friends were said to have arrived at 7.30pm and stayed until around midnight.

MailOnline have contacted a spokesperson for Gordon Ramsay, but has refused to comment.