thief aka default outfit in X-2

There goes the comfiness...unless you're on a beach. Honestly, I think her outfit is a little on the skimpy side (not to mention unpractical in the middle of snow), but oh, well...I guess that's how Nomura wanted it.

Her appearance has changed totally. She has longer hair and no longer braids in the back, but on the front with blue and red beads to hold them together. She still has bangs, and her hair is kept in place with a blue bandana and a ribbon.

Although she doesn't wear much of anything, she still has a long scarf, that is yellow from both ends, but changes into red in the middle. Her bikini top is yellow and stays on with the power of black straps, which are a little on the long side. Between her breasts is a light brown bow, most likely just for decoration purposes. Her shoulders are bare, but her arms are covered in this light, almost white, frilly arm-warmers (if you can call those that). They don't seem to be held up by anything. She has dark brown fingerless gloves.

You can see that she has a very little poison green skirt. And that her panties' 'straps' can be seen above the waist.
She has two pockets on a surpiringly trendy-looking waist pouch, most likely to store her items. More brown strings can be seen...

Her legs are bare, and her shoes...well, I think it's best if you look at the picture. I won't be able to explain them anyway. They look like the shoes you see on the main character from Final Fantasy XI (in the early promo pictures).

OTHER ACCESSORIES
I don't know if this qualifies as an accessory, since it's a glove of sorts...but Rikku wears these reddish brown fingerless gloves while in her thief outfit. I guess it's because she likes to keep her arms/hands covered (she's an Al Bhed, remember?), or because it's just easier for her to hold on to her weapons.

In FF10 she had feathers at the end of her braids, now she has them as earrings.