Wireless Lilypad?

Hi!

I'm all new to arduino, so maybe this question is really basic. I would like to know if it's possible to make the Lilypad communicate wirelessly? E.g. by attaching a bluetooth module or something like that. I want to be able to make several lilypads communicate with each other and preferrably also with other devices such as PDA:s and PC:s.

Thanks in advance!