Leonardo Dicaprio has auctioned off a space voyage with him for $1.5 million.

The 39-year-old star has sold the chance to be his intergalactic travel companion at this year's amfAR Cinema Against AIDS Gala, at the Hotel du Cap-Eden-Roc in the South of France, for the whopping sum.

The 'Wolf of Wall Street' star - who was cited in the auction's programme as a 'Mystery Guest' - will accompany the unnamed winning bidder into outer space on Virgin Galactic sometime next year.

The trip was among a host of highly sought after items which were auctioned off at the annual gala.

An iconic 1967 painting of Marilyn Monroe by Andy Warhol sold for around $477,000, while a 1968 Pablo Picasso painting raked in almost $520,000.

By far the highest-selling lot of the night was artist Damien Hirst's steel-coated 10,000-year-old fossil which went for a whopping $15 million.

The event on Thursday night (22.05.14) - which raises money for HIV/AIDS research - was attended by an array of celebrity guests including Justin Bieber, Jessica Chastain, Sharon Stone, Heidi Klum, Rosie Huntington Whiteley, Rosario Dawson and Kellan Lutz, and raised a total of $38 million, topping the amount raised at all previous events.

Film producer Harvey Weinstein said of the gala: ''This is the coolest thing I've ever seen at an auction.''