She's one of the world's most famous faces. 

Yet, despite Kylie Jenner's stunning looks — and the fact she's a self-made billionaire — the 27-year-old A-lister is no stranger to having her appearance criticised.

Resurfaced photos from this year's Met Gala reveal Kylie — who is now dating Hollywood star Timothée Chalamet — has noticeably slimmed down arms and a small scar in her armpit. 

Social media users have taken to online forums, accusing her of having 'multiple rounds of lipo[suction] on her arms and back' to get 'so skinny'. 

Others suggested it was in fact an implant scar from her previous boob job. 

Now, cosmetic experts have also weighed in claiming the make-up mogul has in fact had liposuction. 

Glasgow-based aesthetics doctor Dr Usman Qureshi also argued she may have undergone a similar procedure called BodyTite — which involves using radiofrequency energy to help 'melt' fat as well as tighten the skin.

He told his 12,000 Instagram followers: 'Have you seen Kylie Jenner's arms?  

'She claims it's just by pilates. I don't think there's any way pilates alone can achieve this. 

'I think she has probably had liposuction, bodytite or a similar procedure.'

In the UK, private liposuction surgery can cost between £2,000 and £6,000. 

The op, which tends to last a few hours, can sometimes be offered on the NHS to treat certain health conditions, such as lymphoedema and lipoedema. 

It involves removing unwanted body fat by inserting a tube under the skin and sucking out small areas of fat. 

 After bruising and swelling from the operation has healed, the areas treated visibly shrink. Recovery can take weeks. 

BodyTite, meanwhile, is a minimally invasive procedure that has gained popularity as an alternative to traditional liposuction.

Also dubbed Laser Lipo, a small incision is made in the target area, and a special handheld device is inserted beneath the skin. 

The device reportedly emits radiofrequency energy, which liquefies fat cells and tightens the surrounding tissues, while suctioning out liquefied fat. 

Last year, Dr Andrew Peredo, who specializes in aesthetic procedures of the face, also speculated that Kylie may have previously had liposuction on her jaw and a buccal fat reduction in the cheeks.

He told MailOnline: 'This is hard to say because she went from looking young and having some baby weight on her face to now being a woman.

'She could have done a little bit of buccal fat reduction in the cheeks to help reduce them a bit.

'And she could have had some liposuction on her jaw to give some definition, but it is hard to tell.'

He also suggested her chin was now pointier, which may be the result of surgery, and that her nose appears 'a lot thinner' — the result of either surgery or makeup contouring.   

This is not the first time, however, fans have questioned her dramatic change in appearance.

In January, after attending Paris Fashion Week social media erupted at the make-up mogul's 'reinvention', accusing her of looking like she was in her 40s.

One cruelly asked: 'What did Kylie Jenner do to her face? I just read she's only 26 but she looks old as hell here.'

Another — in a comment viewed 25million times — said: 'We're seeing in real time what long term filler usage does as you age'.

Despite its popularity, surgeons have previously suggested that using filler at a young age carries multiple risks, including having stretched skin that sags earlier than normal. 

But Kylie has strenuously denied ever getting filler in her face.

Last year, in an interview with the Wall Street Journal, she insisted she had 'never touched my face'.

Yet in 2015, after months of intense internet speculation, then-17-year-old Kylie did admit to getting injections to plump her lips, revealing that her thin lips were an 'insecurity of mine'.

As well as pursuing lip fillers, Kylie has admitted to under going breast augmentation surgery as a teenager but came forward to speak about how much she regretted it.

In 2023 she said: 'I just wish, obviously, I never got them done to begin with. 

'I would recommend anyone who is thinking about it to wait until after children.'