Over weight 2 year old Cat

I am getting worried about my fur baby Peanut. She is a strong tall cat who is very active. The Neibors have been feeding her on top of what I feed her" stinker" and now she is about 15 pounds. What can I do to get her weight down? What is the best food to feed her? Wet food or dry food and how much???

Hello Kitty Loves, maybe you could tell your neighbor to stop feeding her and explain to them that she's overweight. Furthermore you may not know what are they giving her. There are many human food that cats can't eat and are toxic to them.

Get your kitty to excercise by playing with her. Make her chase a ball or da bird cat wand.

Wet food is better than dry as dry have lots of carbs. So cut the dry unless due to time constraints, then you can incorporate dry and wet. But if you have the time, go for wet.
For a two year old, don't think she'll eat that much. Since you are not sure of how much to feed her, you can try feeding her and see how much she eats at one go and try feeding 3 or 4 times a day to gauge her intake in terms of amount and number of feeds. With this you can roughly gauge how much and how many times she need to be fed.

I agree that wet is the best when trying to get them to lose weight...they seem to feel more full on wet food. 

Time shouldn't really be an issue because 3 meals per day should be doable.  One in the morning, one when you get home from work (if applicable) and one when you go to bed) 

You need to go by the amount of calories in the food you are serving up.  Basically, for dieting cat, say 15 - 20  calories per pound of what you WANT her to weigh.  So, how much should she weigh?  .  So, let's say her ideal weight is 10 lbs.  And let's go with 18 calories per pound.  That would be 180 calories per day.  So you find a food (or several different ones) that equal that amount by measuring portions and divide up her meals.  Include treats.  Then you need to weigh her and make sure she isn't loosing weight too fast, but IS losing.  That could be too much food!  You have to make adjustments as you see fit.  Just don't let her lose too fast. 

See this thread, it's fascinating:  http://www.thecatsite.com/t/245236/mickey-my-27-lbs-foster-and-his-journey-back-to-a-healthy-weight