Vera Wang -- She's A Squatter!

Vera Wang squats worse than Maya Rudolph in "Bridesmaids" ... which is why her landlord -- with the greatest name ever -- is suing her for more than a quarter of a million bucks.

Vera Wang opened a boutique for expensive bridal gowns in West Hollywood, but the landlord -- Ah Men, Inc. -- claims she stayed way past the time the lease ran out and just stopped paying rent.

Ah Men claims ... she racked up more than $250K in unpaid rent and then booked it for an expensive new store in Bev Hills.

Ah Men is going after Vera Wang Bridal Melrose ... suing for unpaid rent and some extras.

Ah Men.