Miley Cyrus has received a sex doll as an early Christmas gift.

The 20-year-old star - who is engaged to 'The Hunger Games' actor Liam Hemsworth - took to her Twitter account to reveal she had taken the unusual festive present out for a drive in her car, and joked whether she would be allowed in a carpool lane, in which only vehicles with two or more passengers are permitted.

In a message to accompany a picture of her taking the doll for a spin, she wrote: ''Does this count for the carpool lane? Such a nice Xmas gift (sic)''

The former 'Hannah Montana' star has been fully indulging in the festive spirit has been listening to some of her favourite Christmas songs

In a series of tweets quoting the lyrics of classic hit 'Let It Snow', she wrote: ''Let it snow, Let it snow, Let it snoooooow. The weather outside is frightful ... But the fire is soooo delightful (sic)''

Miley's new erotic blow-up doll is not the first time she has celebrated a special occasion with a naughty gift.

In January, the 'Climb' hitmaker and Liam marked his 22nd birthday by eating a penis-shaped cake.

Photographs even revealed Miley jokingly pretending to lick the X-rated cake and shrieking with laughter as she prepared to cut it.