Lady GaGa has a cameo role in 'Men In Black 3'.

Will Smith - who reprises the role of Agent J in the comedy sci-fi movie - has confirmed the 'Marry The Night' singer is one of a number of stars to appear in the film.

He told Brazilian website ''We have a couple of celebrities cameos, but I cannot reveal who they are. We must keep it a surprise that Lady Gaga appears.''

Tommy Lee Jones will also be appearing in the film, alongside new stars Josh Brolin and Emma Thompson.

Boxer Mike Tyson, legendary star Betty White and singer and 'x factor' judge Nicole Scherzinger are among the other celebrities believed to be taking part in the film, which sees the lead characters head back to the 60s.

Lady Gaga - real name Stefani Germanotta - has not previously had a movie role, but is believed to be wanted by Quentin Tarantino for a role in a future 'Kill Bill' movie, and has shown her talent in her music videos, some of which have been up to 14 minutes long.