Ben & Jerry's is dairy, I don't know of a non dairy ice cream that could compare!!! It is very high in fat, the ultimate fat source! They are kidding around with you, joking that that would be the quickest and yummiest way to eat more fat!
The models in those magazines probably have several things going for them: youth, and good genes. Aside from that, I think you'd be surprised how heavy they probably lift...a common misconception among women is any amount of weight training will instantly transform them into a muscle bound person.
I think if you stick with the total body workouts, like Maximum Intensity Strength, or Power Hour, a few times a week, over Pure Strength and Slow and Heavy, and then do the balance of your workouts in aerobic/cardio, you might get what you want...it depends on your body and how much fat is on it. When people are flabby...sometimes it is from too much fat on their body that they need to burn off to show their muscles. It also depends on how your body responds to weight training. It depends on what you want to change about YOUR physique as well as your fitness ideal.
It has been a long time since I have read Shape but as I remember the models are pretty rail thin and pretty young. I don't know about Fitness. I think when you are young you can get away with less muscle tone and still look good because your fat hasn't started to sag. As you age it becomes clear that your body is either muscle or saggy fat, and to maintain a youth ful look, you need more muscle. Hope this makes sense.
I am rambling, so I guess I will leave off and see what anyone else has to say.
Jen