Can a queen size comforter fit a full size mattress?

Yes, of course it can. A queen is only slightly bigger than a full so you will have lots of blanket. If you are sleeping with a partner, you'll never have to fight over who has more blanket again!

Some people actually prefer to buy queen comforters for full mattresses and king comforters for queen mattresses. It's all a matter of preference. It is however, a different story when you try to fit a smaller comforter onto a larger mattress. So when in doubt, always get the bigger size. =D Hope that helps!