Simon Cowell Warned By Cops -- Get Your Bitches Off Our Beaches

Simon Cowell's two dogs are puppies non grata on the beach in Miami -- the TV mogul was just warned by cops to get them off the sand ... or else.

Simon's been chilling in the sun all day with GF Lauren Silverman and their newborn son Eric -- but despite the beach's explicit NO DOGS ALLOWED rule, he brought along his two Yorkshire Terriers Squiddly and Diddly.

We're told a police officer gave Simon an official warning ... and Simon and Lauren took off soon after.

We almost felt bad for the dogs ... almost.