Well when you say that you are camping in the Jungle, Unless you are doing something that is very specific, you probably will not actually be camping in a jungle.. At least not as a first time camper. But when you go to Tropical countries like Costa Rica or Ecuador, the biggest thing that you have to contend with is Moisture..
Moisture management is the name of the game is staying comfortable in the outdoors, so it is time to think of your clothing as gear... Get rid of all of your cotton clothing- event he underwear and replace it with Nylon or Polyester based clothing- Patagonia makes some really great items- especially skivvies, but any reputable Backpacking manufacturer makes a nice breathable clothing line that will perform well in this situation.
Then get a really good set of Rainwear. I prefer the Marmot Precip series. I really trust it. The North Face and Sierra Designs and Patagonia also ALL make great stuff- Check Backpacker's gear guide (available at a local News store) for side by side gear comparisons.
Lastly and Most importantly- your feet! Get a really good pair of Hiking boots. The Gore Tex versus non Gore Tex debate has raged on for years, but if I were going into the Jungle, I would recommend the Asolo Stynger for women- it really does seem to fit a women's foot better than most. Also Be sure to add a pair of Superfeeet insoles- THIS IS MY SINGLE MOST RECOMMENDED PIECE OF GEAR!!!! It takes a cheap pair of Hiking boots and makes them feel great- when you drop them into a already great pair of boots- it is like heaven..
Finally get WOOL socks- Wool is the best fiber for socks there is.. period. I really do swear by SMART WOOL socks. I just spent 5 weeks camping in 105 degree temperatures, and the only socks that I wore were smart wools (I had a few pairs)... They pull moisture away from the foot and they insulate even if you get them wet.. This is all about keeping your feet dry and insulated..
When you do camp, take some accessories to make you feel more comfortable, I like to take a comfortable self inflating mattress- like a Therm-a-Rest, and a travel pillow. Take a good LED Headlamp , spare Batteries and a good book too...
Hope that this helps