The 'Materialists' star plays the mistress in Allen's song from her 'West End Girl' album.

Dakota Johnson made a surprise appearance in Lily Allen’s “Madeline” performance during the Dec. 13 episode of SNL.

Lily Allen and Dakota Johnson deliver powerful onstage collaboration during "Madeline" performance, addressing Allen's ...

The set for Allen's performance had an uncanny resemblance to the Brooklyn, N.Y., home she shared with her ex ...

Dakota Johnson made a surprise cameo during Lily Allen's performance of 'Madeline' on the Dec. 13 episode of 'Saturday Night ...

Allen performs two tracks from her latest album, West End Girl, with actress Dakota Johnson joining for one ...

As Lily Allen returned to the Studio 8H stage for the first time in nearly 20 years, she had some company from a familiar ...

Dakota’s surprise cameo was one of many stylish moments during Lily Allen’s ‘Saturday Night Live’ performances.

Lily Allen performed a racy dance behind the scenes of NBC's Saturday Night Live before posing with fellow actress and pal ...

Lily Allen has fuelled rumours that her hit divorce album West End Girl is set to become a play just days before she took to ...

Lily Allen turned Saturday Night Live into a full-on West End drama when Dakota Johnson crashed the stage as Madeline, ...

Moment Lily Allen brings Dakota Johnson out as ‘Madeline’ on SNL - ...