You can download all the sheets from my website.
Here are the invitations you can print out, and a party pack sheet with loads of party ideas:
Gillian, her daughter, my friend Caroline and I all did some baking and came up with some themed cakes, plus a sheet that tells you how to make your own:
And the partygoers can muck in and make their own cupcakes look like aliens:
You can make tiaras and alien googly eyes for your costume:
Design your own alien craft session!
And don't forget, STORYTIME!
I'd love to hear from anyone who throws this party, do let me know how it goes and send photos!