Hijab is not necessarily wearing an 'abayah or a particular style of dress; it involves wear modestly while covering your body except your face and hands. If you cover your head with a hat that is acceptable too. For further details, you may consult the following answer.

• Is it enough for a female to wear loose skirts/trousers and knee-length, long-sleeved shirts with a hijab that comes down over the shoulders and chest? Or must an abaya/jilbab be worn over it. I am a student who is currently on holiday and I have been wearing the abaya all through this Ramadan as I don't know what the correct dress is. But I will soon be going back to college and I think it will be difficult for me to go around in abaya all the time. Please clarify this issue for me as soon as possible.