Britney Spears is officially on the comeback trail, as she has teased her brand new song 'Private Show' with a 'steamy' trailer.

Spears has been in residency in Las Vegas for the last couple of years, but will release her forthcoming ninth album this year.

She'll also release a new fragrance of the same name, 'Private Show', which is what the commercial below pertains to - but you can hear some of the song as she cavorts around an empty theatre.

Watch it below: