Yep. I love PuppyZzang, especially their harnesses.
Daisy's had one of each style.
She's outgrown this one;
But still wears these;
(excuse the bad pic! Puppy uglies xD )
The harnesses are long lasting (I'm guessing D's had hers about 8 months, wears it every day, been in the wash a lot and still great.) And they 'do up' at the back, meaning my little escape artist doesnt get out of them xD
The first pic I posted, the stripy one, also comes in black/white stripes.
And the second one, the starry one, also comes in blue, with black stars.
The third one also comes in red, but thats a girly one xD
If you type Puppy Zzang harnesses into eBay, they'll come up They aren't expensive either, about £12-13 each.
I think the best harnesses for chihuahuas is Buddy Belts or Puppia (the vest style that is a step in harness.) We have a couple of both brands and I love both of them.
The Buddy Belt is a leather harness that is very well made. The Puppia harness is like a mesh type material that is a vest. I personally do not care for the over the head harnesses because I am afraid of Jaxx pulling his head out too fast but Puppia makes a over the head style harness as well. I think the vest style though is more secure. The Buddy Belt is a very secure harness as well. We have not had a problem with either of these brands rubbing Jaxx's small legs.
If you need help with sizing on either harness there are lots of people on here with experience in both harnesses that will be able to help you.
I'm a Puppia, step in, vest harness lover. I think the BB'S are great quality, and some really pretty colors/patterns, but I'm partial to Puppia. Probably because we've used them for so long, and the fit is the closest to perfect that I've found for my pups. I recommend trying both if you can.