I will be visiting Vietnam, Thailand, Cambodia late October to mid November and would appreciate input on the best type of clothing to wear for a woman. And any other tips to help make my trip fantastic. Thanks.

You want light fabrics that cover a lot of skin. No shorts in temples or in cities generally (they are considered resort wear), no tank tops (likewise). No sleeveless tops in temples. You will be most comfortbale in long, light pants or long (no minis) light skirts, with a light short-sleeved top. I generally wear sturdy sandals (such as Keens or Tevas), but you'll want something with good foot protection in Cambodia where you'll be doing a lot of climbing and walking on uneven surfaces.

I like light cottons or cotton-linen blends, but some peole swear by some of the new light quick-drying synthetics.

I second the advice to wear cotton. I usually wear light-weight synthetic trousers when traveling, but am way too hot in them in parts of S.E. Asia - the humidity is too high. However, if you're in north Vietnam in November, you may find it cold (not to mention wet). Take layers.

I got a good idea from an American woman named Cynthia that I met while traveling in Xian.

When traveling, she packed a lot of clothes that were "destined for the trash bin"--either worn-out, slightly torn, or out-of-date. She wore them while traveling and then tossed them. She got a final bang out of them before putting them out of their misery AND made room in her suitcase for extra bargains along the way. Good thinking.

Absolutely agree on cotton. I had a gauzy longish peasant skirt I wore to death; my legs could breathe, I could wash it out and it would dry overnight. I did have tank tops but carried a light silk jacket that I slipped on for the wats and temples. Obviously for all that Angkor climbing, you'll want light weight pants and sturdier shoes. There are some great chinese cargoey pants in a blend that work well.
The sun is intense, so a brimmed hat can be a life saver.

Based on our recent trips to Vietnam and Thailand, I'd recommend drip-dry light cotton cargo pants.

At all times, keep in your pant's pockets some toilet paper + small change for toilet entrance fee + a few band-aids + a small pouch of disposable hand wipes or a small bottle of hand sanitizer.

My husband joked that the multiple pockets on my cargo pants would confuse the heck out of the pickpocketers.

We brought diaper pins and found them useful in keeping our wallets secured in our cargo pant pockets.

Due to the small, frequently wet, and very unsanitary (often squat-down type) public toilets in VN, I don't recommend big skirts that are hard to gather neatly, or long pants that sweep the ground.

If you plan to visit temples, definitely no sleeveless shirts.

Many streets in VN and Thailand are uneven and very filthy. Better to bring footwear that covers your toes, and thick socks with good cushion if you plan to walk a lot.

One night in SaiGon, a rat almost as big as a chihuahua nearly ran across my feet. That was the last time I wore flip flops outside of our hotel room.

Thank you and the others for your suggestions. Very helpful and will get me started in the right direction.