I'd repot them asap otherwise the roots are going to be a right mess to sort out and be all tangled with each others roots.
Edit - hmm are they in them self contained soil things as at first glance i just saw a white pot holding em all but 2nd glance i see they might not be.
Edit - hmm are they in them self contained soil things as at first glance i just saw a white pot holding em all but 2nd glance i see they might not be.