Daryl Hannah looks leggy in a low-cut white cotton mini dress as she enjoys a holiday with boyfriend Neil Young in St Tropez 

They've been dating for ten months and Daryl Hannah and Neil Young have stepped their romance up a gear with a romantic break in St Tropez, France. 

The couple were pictured enjoying a stroll around the area on Wednesday and Daryl, 54, looked younger than her years in a pretty white cotton sundress which showed off her youthful legs. 

The neckline was low-cut and the Splash actress topped off the look with a pair of trendy brown Swedish Hasbeen sandals and a white sun hat.

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Hiding her eyes behind a pair of dark sunglasses, the Hollywood star carried her belongings in a chic eco-friendly hessian bag which she wore on her shoulder. 

Legendary musician Neil, 69, complemented her look in a cool white shirt, worn with a pair of grey cargo shorts. 

He kept a low profile in a Nike baseball cap and sunglasses as he followed closely behind the pretty blonde. 

Neil and Daryl's romance has been blossoming since he filed for divorce from his wife of 36 years, Pegi Young, on July 29 last year. 

A little more than a month later in September, the rocker and Daryl were seen holding hands at a restaurant in Westlake, California.

Neil and Pegi, 62, were married in 1978 and have two grown children together, including son Ben who has cerebral palsy.

Pegi, also a musician, toured and sang backup for her husband.

Meanwhile, Neil and Hannah are both passionate about environment activism and they previously collaborated on a Greenpeace documentary about the Alberta oilsands in Neil's native Canada.

The video was called 2009's Petropolis: Aerial Perspectives On The Alberta Tar Sands.