Actress Michelle Rodriguez of Lost and Fast and Furious fame has always been a loose cannon. So it's of little surprise that she was apparently no model bridesmaid at the four-day wedding of her best friend and manager, Giancarlo Chersich.

At the welcome dinner at the Casa de Campo Resort in the Dominican Republic, Rodriguez pushed fully clothed guests into the pool. A classic move.

Then, then next night, a loud Michelle broke up the bachelorette party by yelling that the stripper was "fat and had a small a$$."

Michelle was supposedly rather ticked off when the dancer asked for a volunteer at the beginning of his routine and then made the willing babe kneel down.

"That's bull$h!t," the sexy star yelled. "He should be kneeling for her; this is a f*%king bachelorette party!"

As the stripper began gyrating and pushing his crotch into the bride-to-be's face, Rodriguez yelled, "This is the kind of thing that brings out the bisexual in me."

Hard to argue with that.

Then, on the wedding day itself, Rodriguez looked like an angelic bridesmaid in a lilac silk and empire-waist gown ... at least until she changed into skinny jeans and a tank top and grinded at the reception with men and women alike.

Sounds like just the kind of shindig Lindsay Lohan would've loved.