I also have fat and flabby arms, I use this method to firm my arms. You can try doing tricep kickback and tricep extensions using dumbbell that weigh 0.5kg to 1.5kg. DON'T do bicep curl, this will not help build lean muscles but bulky muscle. Not suitable for girls.

when im eat less, dun eat too oily~
really slim down on my arm~
now i using gym to maintain~

Oh dear but its actually true. Ladies with bigger chest tend to have flabby/bigger arms as well.

I never make myself hungry when i'm on diet. Make your diet a healthy lifestyle. Yes, I personally use 1kg dumbbell on each hand. I dont do bicep curl, I do burpee, tricep kickback, tricep extension and HIIT exercise. Of course you need to do cardio to burn overall fat because you cant burn fats just on your targeted problem areas. So you have to do cardio with some weight lifting to burn more fats as well as build lean muscles.

Try it yourself because everyone's body is different! Remember to change your workout when your body get used to it. Rotate your workouts.
Remember you wanna maintain this beautiful body for a long term period. This is not a short term process. Of coz you can lose weight easily without eating but your body is not healthy and don't get all the nutrients needed, but is up to you. I would avoid eating too much processed food and carbs, and opt for more protein.

Can check out this video, I love watching and following them:-

https://www.youtube.com/watch?v=CrETL9JyZZo  (Marie Claire)
https://www.youtube.com/user/blogilates              (Blogilates)
https://www.youtube.com/user/Perfectfitnesstv      (Perfectfitnesstv)

For food, eat healthily..Eat like a queen for breakfast, eat like a citizen for lunch and eat like a beggar for dinner. Remember to drink at least 2 litres of water each day to flush out your toxins and keep yourself hydrated which also leads to healthy skin. Make it a habit. I'm a person who is lazy to exercise and drink a lot of water but I force myself to do so..for the 1st or 2nd week you feel that its suffering but after you get to used to it then it will became your daily routine. I'm dieting too (eat healthily and try to exercise as much as I can, because most of my time spend on sitting in the office facing the laptop). Lets diet and get fit together. I have an idol as my motivator so whenever I see her pic I will get jealous and make me wanna exercise. Mine is Park Shin Hye, whose yours?

Can see her picture here...I want to have her body!
http://www.allkpop.com/2013/02/park-shin-h...ees-new-catalog

Anything can just ask me, I will share what I know. I'm not forcing anyone to do my way, its just a sharing =)

Not always true. I am also wearing C cup but my arms are not big. I have some friends who are also having bigger bust but have small arms.

In order to slim down your arms. You can do some do some exercise that focus on your arms

You can refer the link below for arm exercies
http://www.youtube.com/watch?v=2bCXWB9GkGQ

Can try out those exercise that not only slim down but toning your arms too. You can see the difference in 2 weeks time if you continue do those exercise everyday.

Just need to be precise and patient in doing those exercise if you want to slim down faster. Good Luck

Lifting dumb bells at a light weight for a long time surely no difference

You gonna keep increasing and increasing the weight so that your muscles can literally grow.

Cardio's fine, but if you don't cardio, it's fine too.

HIIT is only suitable for those who have trained for some period of time and not for newbies that might likely injure themselves with such high intensity training.