Kathryn Newton's Cassie Lang costume from Ant-Man and the Wasp: Quantumania on display...

In Ant-Man and the Wasp: Quantumania the teenage daughter of the size-changing superhero, 'Cassie Lang' (played by Kathryn Newton), builds a device to send a signal down into the Quantum Realm. Inadvertently she, her father and their friends are sucked down into the microscopic dimension beyond time and space. In addition to having a brilliant mind Cassie has also been getting into trouble, even getting arrested, helping vulnerable people in need. Down in the Quantum Realm, wearing her own Pym Particle-powered super-suit she and her father help a band of freedom fighters take on the tyrannical 'Kang the Conqueror'.

Cassie Lang costume worn by Kathryn Newton

in Ant-Man and the Wasp: Quantumania

Cassie's purple and black costume was photographed (by camera and iPhone) at Hollywood's El Capitan Theatre on February 23, 2023.

Sammy Sheldon is Costume Designer on the Ant-Man sequel, and you can see more of her MCU work with Paul Rudd's Ant-Man costume from his first solo movie and these Eternals movie costumes.

Ant-Man and the Wasp: Quantumania movie poster

Here's also a selection of screen-used props from the film, including Cassie's device that she uses to send a signal down into the Quantum Realm.

Screen-used props from Ant-Man and the Wasp: Quantumania

Make sure you also check out more cool costumes from Ant-Man and the Wasp: Quantumania temporarily on display at the El Capitan Theatre.

Ant-Man and the Wasp: Quantumania movie poster