It depends on what kind of clothes it is. If it's a famous brand, it won't work without a trademark. If it's not expensive clothes, it doesn't matter if there are no trademarks, because many trademarks are unregistered and can be used as well. Having a trademark doesn't mean it must be genuine.
For more information or services about professional trademark and intellectual property agency, please visit www.shewentm.com or call 0 10-82685045.