A
corruption of glitteratti, meaning the hoi poloi or high
society. In this case it's the complete antithesis. The
celebrity chav and their associates.
Usually used in association with rich and successful, by their own standards, chavs. EG. lower league footballers and the women who try to sleep with them or reality TV
idiots. The chaveratti were out in
force last
night at Ritzys nightclub in Romford.