'Blow' Star Jennifer Gimenez -- Burglars Stole My Gucci But Spared My Dog!

Movie and reality star Jennifer Gimenez will be wearing the finest Ross dresses for her next fancy event ... because all her good stuff has been stolen.

Law enforcement sources tell TMZ ... the "Blow" actress came home to her L.A. home Monday afternoon and found her front window wide open and the screen thrown to the ground.

Sources close to Jennifer say that she went inside and, to her horror, found several rooms torn apart and $20,000 worth of jewelry, Gucci and Louis Vuitton handbags missing.

It happened in broad daylight, yet as far as we can tell there were no witnesses.

The good news ... her little pooch Mickey was home at the time but apparently he wasn't enough of a designer dog to entice the thieves.