The Beatles' Sir Paul McCartney joins grandson in NYC

He's preparing to take the stage by storm in Australia, which will mark his first tour since 1993.

But Sir Paul McCartney put his family first on Saturday when he spent the afternoon with grandchild Arthur Donald at Vilebrequin in East Hampton, New York.

British musician Paul, 75, caught the eye in his striking orange tee as he enjoyed a relaxed spot of shopping with his eldest grandson, 18. 

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Twist & Shop! Sir Paul McCartney, 75, put his family first on Saturday when he spent the afternoon with grandchild Arthur Donald, 18, at Vilebrequin in East Hampton, New York

Twist & Shop! Sir Paul McCartney, 75, put his family first on Saturday when he spent the afternoon with grandchild Arthur Donald, 18, at Vilebrequin in East Hampton, New York

The iconic rocker slipped into a pair of skinny-fit chinos to complete his casual ensemble, as well as throwing on a jacket to keep off the chill.

Donning a blue hat, the bass guitarist stood out from the sea of faces in the Big Apple when he looked utterly relaxed in the good company of his young relative.

Arthur, who is the son of Paul's eldest daughter and photographer Mary, looked equally pleased to be spending time with his granddad. 

The star's family member pulled on a baggy hoodie and cut-off shorts for the casual outing.

It's all relative! British musician Paul, 75, caught the eye in his striking orange tee as he enjoyed a relaxed spot of shopping with his eldest grandson, 18

It's all relative! British musician Paul, 75, caught the eye in his striking orange tee as he enjoyed a relaxed spot of shopping with his eldest grandson, 18

Paul was the second member of The Beatles to become a granddad, following in the footsteps of his former bandmate Ringo Starr.

In his personal life, the songwriter has five children and he has been married three times.

He shares four children Heather (who he legally adopted), Mary, Stella and James with his first wife Linda Eastman.

The couple were exchanged vows in a romantic ceremony in 1969 and they were married until her death in 1998.

He went onto marry Heather Mills - who he shares daughter Beatrice Milly with - in 2002 but they divorced in 2008.

Paul is now married to

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