Lila is wearing an authentic air hostess uniform, shes just just quit from her old job and she wants to get her uniform wet to send it off.
She climbs up the steps to the pool and takes a seat, Lila then dips her heels into the water showing her tights getting wet. Next she turns around pulls up her skirt and shows off her pants and takes a jump backwards into the pool.
Lila swims around the pool getting her uniform soaked through. Lila plays around in the pool getting in and out, showing off her pants. Jumping in etc.
This scene contains underwater slow motion footage.