It's a Bikini World is a 1967 American musical comedy film starring Tommy Kirk, Deborah Walley and Bobby Pickett.

Featuring a pro-feminist plotline, it is the only film in the beach party genre to be directed by a woman (Stephanie Rothman).

The mainstay of the once-popular genre was the series of films by American International Pictures (AIP), starting with the surprise hit Beach Party in 1963 and ending with The Ghost in the Invisible Bikini (a box-office flop) in 1966.

It was produced and originally distributed by Trans American Films under the title The Girl in Daddy's Bikini.

Young surfer, local beach jock and ladies' man Mike Samson meets Delilah Dawes.

At first, he tries to add her to his collection of women, but she rejects him because she finds him chauvinistic and shallow, so he disguises himself as a nerdy twin brother named Herbert.

To publicize the venture, he joins forces with Daddy, a car, surfboard and skateboard customizer and owner of local music club The Dungeon.

It was simply my first chance to make a feature film.”"[4] Rothman later stated her rationale for the script: Girls in beach pictures were usually very passive.

The location used for Daddy's "dungeon" in the film is the notorious Hollywood Boulevard club The Haunted House, notable for its bizarre stage in the shape of the mouth of a giant fanged monster.

The club also appears as the setting for Ted V. Mikels' go-go exploitation film Girl in Gold Boots, released a year later in 1968.

Deborah Walley and Tommy Kirk work as hard as if they were in a really great film like Beach Blanket Bingo but director Stephanie (!)

"[15] A modern review by Graeme Clark reported that the film "unintentionally has an oddly forlorn mood to its silliness," that it "had more of a proto-feminist theme to it than anything Frankie Avalon ever had to contend with from Annette Funicello," and that "[f]or nostalgists, this is a far more promising prospect for entertainment than anyone else, but that casual melancholy informs the proceedings, not something that would have struck many at the time.