Katie Holmes, Suri Cruise Miami Beach playing ocean
Katie Holmes, Suri Cruise Miami Beach playing ocean
Katie Holmes, Suri Cruise Miami Beach playing ocean

Apparently Katie Holmes forgot daughter Suri's bathing suit because the five-year-old went swimming in her pretty floral dress Saturday in Miami.

Meanwhile, mom Katie was bikini clad but kept her hot pink jean shorts on with her maroon halter, showing off a super-tight stomach.

The pair are in town with dad Tom Cruise as he shoots Rock of Ages in which he plays an aging rocker with long hair and abs as tight as Katie's! If you haven't seen the first shot of Cruise in character, CLICK HERE - you don't wanna miss it!

And check out our huge gallery of Katie and Suri beach pix below - SO cute!