Cast of Who's That Girl

Madonna plays the lead role of Nikki Finn, a feisty and unpredictable young woman who shakes up the life of lawyer Loudon Trott.

Griffin Dunne portrays Loudon Trott, a straight-laced lawyer who finds himself caught up in Nikki Finn's wild antics.

Bibi Besch takes on the role of Ms. Worthington, an elegant and sophisticated woman who encounters unexpected troubles.

John McMartin is cast as Simon Worthington, a character entangled in the chaotic events caused by Nikki Finn.

John Mills brings Montgomery Bell to life, a key figure impacted by the whirlwind that is Nikki Finn.

Haviland Morris plays Wendy Worthington, a character dealing with the aftermath of Nikki Finn's escapades.

Coati Mundi takes on the role of Raoul, a quirky character who adds to the mayhem caused by Nikki Finn.

Drew Pillsbury portrays Detective Doyle, a determined investigator caught up in the chaos surrounding Nikki Finn.

Robert Swan is Detective Bellson, another law enforcement officer working to unravel the mysteries tied to Nikki Finn.

Stanley Tucci appears as 2nd Dock Worker, a minor character who plays a part in the unfolding events.

Arthur Tovey makes an uncredited appearance as the Butler, a background character in the film.

Dennis Burkley plays Benny, a supporting character swept into the chaos caused by Nikki Finn.