Looking for a fake bath bubble solution

Hi everyone..I am looking for some advice on staging a bubble bath scene on stage..I dont want the actor nude and I need to have her in a bath but looking like she is in a bubble bath...dont want to use any water for safety reasons so looking for a bubble substitute that will not burst go flat or look silly or even end up everywhere..any suggestions please email me on henj@ozemail.com.au Thanks or of course use the forum!! Henry Jennings