Bratz Babyz Fish Tank
Take good care of your fish and decorate their tank. Find under "Games & Activities".

Pup World
Steer your dog through various tasks. The only dress-up available is color of your puppy and your puppy's collar.

Racing Frogs
Create a frog, name it, train it, and take care of it.

Nick-O-Qarium
Design a fish and take care of it. Move the red handle and click "stop" to create your fish.

Zetapets
Children-oriented community with tons of things to do, games to play, and places to explore.

Pony Island
Breed, train, sell and buy ponies. You can buy a few decorative items for your ponies.

GiroPets
Create a pet and do different task to earn money. Dressing up is limited to a few items and certain types of pets.

Grophland
Raise, breed, dress and fight the odd litle Grophs. Lots of dress-up options!

Neopets
A huge virtual pet site with lots of games and activities.

TPPC Online RPG
A Pokémon role playing game. Get items by competing in challenges.

I have mistakenly listed a few virtual pets websites with no dress-up games. I will be going over the sites listed to check them and remove those with no dress-up features. Below are websites that will be removed in a few weeks.

Subeta
A few people have written in to tell me that this website does have a dress-up feature. However, after several attempts using Firefox and Internet Explorer, I have not been able to find it. If you have, I'd lover to hear about it.

TeriPets

Power Pets

= recommended websites.
= only works in Internet Explorer.
= requires registration.