Beyoncé's put a trailer for her documentary on the internet

'Bello Embustero' chanteuse Beyoncé's plonked a teaser trailer thing for her forth­com­ing HBO doc­u­ment­ary online.

During its 25 seconds we get to see a flash of her bump (SPOILER: there's a baby in it), a bit of her in the studio looking miserable and a clip of her running through a field as a child.

Why not watch it below for more information.

The doc­u­ment­ary 'airs' on February 16.