Whenever she is out in public, Zara Tindall usually has a big smile on her face. Whether catching up with cousin Prince William and Princess Kate, spending time with husband Mike Tindall and their children, or greeting her uncle King Charles, the 43-year-old brightens up most occasions with her sunny beam.

Her megawatt smile also reveals pearly white straight teeth that many of us would be envious of. But Zara has had a little help in the dental department over the years.

Princess Anne's daughter wore braces as a child - but it appears she has also had some work done in adulthood.

Zara wore braces in her youth (
Image:
Tim Graham Photo Library via Getty Images)
Zara appears to have had some dental work over the years (
Image:
UK Press via Getty Images)

According to cosmetic dentist, Dr. Julia Coelho, of The Door W4 , the royal likely opted to have composite bonding or veneers at some point.

She told HELLO!: "Composite bonding is a dental procedure where a tooth-coloured resin material is applied and hardened with a special light to improve or restore a smile.

"This procedure is used to repair decayed, chipped, fractured or discoloured teeth. It can also be used to make teeth look longer, close spaces between teeth, or change the shape or colour of teeth. This is a popular choice and something Zara could have used to improve her smile."

Zara may also opt to go for teeth whitening treatments. However, composite bonding is matched to the shade of your teeth, which creates a naturally flawless look.

It comes after Zara's husband Mike Tindall surprised royal fans by revealing he wore braces on the couple's wedding day - and nobody noticed.

Zara and Mike tied the knot back in 2011 at Canongate Kirk in Edinburgh with 400 guests in attendance, including the late Queen and Prince Philip.

Zara has beautiful straight white teeth (
Image:
Getty Images)

It only later came to light that the groom had invisible braces on his teeth at the time. He had the work done by Dr Graham Tinkler, a specialist in Invisalign treatment, which uses a transparent resin shield placed over the teeth in order to gradually move them to a more desirable position.

They are often referred to as 'invisible braces' because they are barely noticeable - and they are completely removable, useful when it came to Mike's rugby playing days.

In a testimonial shared on Dr Tinkler's website, Mike wrote: "Refusing braces to straighten my teeth as a child has been a big regret for me.

"Then as a full time rugby player I knew traditional braces were not an option but Invisalign allows me to carry on playing sport and you won't even see them in my wedding photos."

Princess Kate, meanwhile, is believed to have visited French-born orthodontist Dr Didier Fillion for "invisible" braces ahead of her wedding to Prince William.

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