A HUGE US rockstar has shared a rare snap of his look-a-like son on his milestone 18th birthday.

The performer uploaded two sweet pictures showing the pair striking a sultry pose as well as on the day the teen was born.

White Stripes guitarist and lead singer Jack White was eager to celebrate his son Henry Lee White's special day with his thousands of followers.

Henry, who leads a private life out of the spotlight, is one of Jack's two kids with former wife Karen Elson, who he married in 2005.

The pair split in 2013.

Henry looked just like his Seven Nation Army hitmaker father Jack in one snap, which saw the rocker posing with his guitar.

The teen donned a black top as he stood in front of a speaker, with his floppy dark hair over his forehead.

In his caption, Jack revealed his pet

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