Zara Tindall dotes on son Lucas, 5 weeks, as she's seen with her newborn for ...

Zara Tindall was pictured for the first time with her five-week-old son Lucas Philip Tindall at the Cirencester Park International Horse Trials on Sunday.

Cutting a low-key figure in a baseball cap, jeans and boots, Her Majesty's granddaughter, 39, barely took her eyes off her baby boy's pram as they enjoyed a day out.

The doting mother appeared to introduce Lucas - who was tucked away in his pram -  to other spectators before taking a phone call.

Day out: Zara Tindall, 39, was seen for the first time with her five-week-old son Lucas Philip Tindall at the Cirencester Park International Horse Trials on Sunday

Day out: Zara Tindall, 39, was seen for the first time with her five-week-old son Lucas Philip Tindall at the Cirencester Park International Horse Trials on Sunday

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Zara - who shares little Lucas with her husband Mike Tindall - was at the event to support her horse Classicals Euro Star, ridden by equestrian Jason Wood on the day.

She wore her hair swept back into a bun and at one point pulled her rain jacket's hood up around her face to keep the chilly weather at bay.

The royal also stopped by a food van.

Zara received an MBE in 2007 for services to equestrianism and won a silver medal at the 2012 Olympics as a member of the Great Britain Eventing Team.

Say hi! The doting mother appeared to introduce Lucas - who was tucked away in his pram - to other spectators

Say hi! The doting mother appeared to introduce Lucas - who was tucked away in his pram - to other spectators

Doting mother: Cutting a low-key figure in a baseball cap, jeans and equestrian boots, Her Majesty's granddaughter barely took her eyes off her baby's pram as they enjoyed a day out

Doting mother: Cutting a low-key figure in a baseball cap, jeans and equestrian boots, Her Majesty's granddaughter barely took her eyes off her baby's pram as they enjoyed a day out

The mother-of-three gave birth to their son Lucas, weighing 8lbs 4oz, at 6pm on a Sunday in March on the bathroom floor of their family home on Princess Anne's Gloucestershire estate.

Zara and Mike, 42, also have daughters Mia, seven, and Lena, two.

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Mike confirmed the news of his family's new arrival on his podcast The Good, The Bad and The Rugby - and hailed Zara a 'warrior'.

Speaking in March, he revealed he took the little one straight downstairs to watch sport on TV, after snipping the cord and enjoying skin-on-skin contact.

Supportive: Zara - who shares little Lucas with her husband Mike Tindall - was at the event to support her horse Classicals Euro Star, ridden by eventer Jason Wood on the day

Supportive: Zara - who shares little Lucas with her husband Mike Tindall - was at the event to support her horse Classicals Euro Star, ridden by eventer Jason Wood on the day

The unconventional royal birth announcement via Mike's podcast shows yet again a different approach from the Tindalls, who revealed their third pregnancy in the same manner. 

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