lilla, kurti is an Urdu word to describe a type of short top/shirt. Usually it's worn with a shalwar, the trousers associated with Pakistani women. However there's a growing trend for them to be worn with jeans asthey go together so well.
"As the name suggests these are short top that go well with almost anything. Best paired with jeans these can be worn as casuals or elegant evening wear when one's partying."
http://www.shrisidhivinayakcreation.com/kurti.asp