Her youthful appearance on Lorraine sparked debate from fans last week, with many viewers taking to Twitter to comment on her looks.

And as Priscilla Presley defied her 72 years as she delved into her late husband Elvis' archives on Wednesday, posing with his possessions from over 50 years ago at a new London exhibition.

The former wife to the rock legend cut a stylish figure in a black bodycon dress as she attended the Elvis On Tour Exhibition at the O2 in London.

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Priscilla Presley continued to showcase her flawless complexion on Wednesday as she attended the Elvis On Tour Exhibition at the O2 in London

Holding one of her late husband's guitars as he once did, the star showcased her trim physique in the midi-dress, which featured a silver eyelet design.

She accentuated her long limbs with patent black pumps and accessorised the all-black ensemble with a silver heart necklace.

Wearing her sleek flame-coloured hair in a neat ponytail, Priscilla drew attention to her smooth complexion with a bold pink lip.

The former wife to rock legend Elvis Presley looked decades younger than her 72 years, as she cut a stylish figure in a black bodycon dress

The American actress posed with some of the 200 artifacts from the Graceland archives, which cover the years of the King of Rock and Roll's life from 1969 to 1977.

Priscilla has been enjoying a whistles-stop tour of London, promoting the new compilation Elvis album and tour, Christmas with Elvis and The Royal Philharmonic Orchestra on Lorraine last week.

While giving insight into her life with Elvis, the 72-year-old's appearance got fans commenting on Twitter in their droves about her youthful look.

Posing with one of her late husband's guitars, the star showcased her trim physique in the midi-dress, which featured a silver eyelet design

Throwback: The couple married at the Aladdin Hotel in Las Vegas in May 1967

A viewer shared on the micro-blogging site: 'What has Pricilla [sic] Presley done to her face?'

'Priscilla Presley what happened to ageing gracefully? #plastic,' another posted.

One fan wrote: 'What has Priscilla Presley done to her face.....looks like she has a scary mask on'.

While a viewer wrote: 'Priscilla Presley looking like something from a horror movies on ITV Lorraine'

Youthful: While giving insight into her life with Elvis, the 72-year-old's appearance got fans commenting on Twitter in their droves about her youthful look

The American actress posed with some of the 200 artefacts from the Graceland archives, which cover the years of the King of Rock and Roll's life from 1969 to 1977

Despite the negative commentary, fans of Priscilla jumped to her defense and expressed their awe in how great she was looking.

One fan wrote: 'I know she has had a lot done but Priscilla Presley looks amazing!!! @reallorraine @ITVLorraine'

'@Cilla_Presley lovely to see you on "Good Morning" with Lorraine,' another shared. 'I always listen to Elvis. Love his music #ElvisPresley'.

Smooth complexion: While giving insight into her life with Elvis on Lorraine, the 72-year-old's appearance got fans commenting on Twitter in their droves about her youthful look

Priscilla previously fell foul of botched plastic surgery, and allegedly had industrial low-grade silicone similar to that used by mechanics to grease car parts injected into her face.

Her spokesperson added said at the time: 'Priscilla Presley was one of many documented victims of Dr. Serrano.

'An investigation which uncovered his misconduct ultimately lead to his imprisonment. Ms. Presley dealt with this matter years ago and everything is now well.'

Cute: The King of Rock and Roll with his wife Priscilla Beaulieu Presley and their 4 day old daughter Lisa Marie Presley on February 5, 1968

Happy Family: Priscilla pictured with Elvis and her daughter Lisa-Marie in 1970

Beauty nightmare: Priscilla previously fell foul to botched plastic surgery, and allegedly had industrial low-grade silicone similar to that used by mechanics to grease car parts injected into her face

American beauty Priscilla also recently discussed the Christmas hit Blue Christmas caused hysteria amongst parents and pastors when it was released in 1957.

She shared: 'When this was released in 1957 it wasn't received very well, it was seen that it was outrageous and degrading...

'Now the album is revered because the teens of the day made it go to the top of the charts but parents told them they couldn't buy it.'

Adding: 'He didn't do it on purpose but he said when he was releasing it, it would be a little rock'n'roll.'

Discussing how shy Elvis was, Priscilla added: 'He lived in his own world, we lived in his world, he often felt uncomfortable going out... but on stage that's the Elvis everyone saw.'