I'm doing a last minute 3 tiered b-day cake for somebody and I'd appreciate any decorating suggestions......I've only seen layred cakes. And the colors are purple, silver and black. And she likes stars. I'm making 3 12'round cakes and gonna make stars out of foundant. If u have any ideas I would appreciate them. thank you.

You could do fondant stripes on one tier, fondant diamonds on one and fondant dots on the other tier in the colors you mentioned.

Here's a 4 tier I did this weekend. Maybe that will help.

http://www.cakecentral.com/modules.php?name=gallery&file=displayimage&pid=1230405

Hmmm, if it's last minute you prob wanna keep to a single theme just to keep the work load down! Here's a few nice tiered star theme cakes:

http://www.flickr.com/photos/specialtcakes/2457275057/

(looks like the stars are brushed embroidery)

http://www.flickr.com/photos/8723922@N03/2261339793/

(minus the dora on top!Unless they're a Dora fan of course!)

http://www.flickr.com/photos/thecakeblog/2439962784/

(pretty and simple design)

HTH's