What can I use to paint ceramic cups?

[curiousgeorgie]

I'm not a crafter by any means so sorry if the answer is easy

I need to decorate 30 white teacups and saucers for a party, I tried some normal paints which looked good for 2 days and then started to peel off... What can I use?

www.yellowmoon.org.uk/catalogsearch/result/index/?material=Ceramic+%26+Porcelain&q=ceramic+pens - pens?

Ceramic paint www.hobbycraft.co.uk/home-craft/glass-and-ceramic-painting/ceramic-paint

Are they glazed already though?

www.yellowmoon.org.uk/brilliant-porcelain-paint-pens - try again