Big Boobs, Short Skirts and Modesty

I don't have a forum to discuss these things with other modest women in real life, so I'd like to post a couple of complications I've had.

Ok, so I may have mentioned this before, but I have big boobs. They've always been that way. As a pre-teen, I showed about as much of them as possible. It was a pride thing for sure-- I had something very few other girls my age had.

As I've gotten older, it's been hard to find appropriate clothing, especially working with kids.

Here are my requirements for "appropriate":

• Doesn't show lots of cleavage, even bending over
• Not too tight
• Also, not a bag.

Here's a hint:

• For women with my breasts, they don't exist.

Also, at first I didn't understand why the tzniut requirement called for skirts below the knees, except that they are an easy line for delineation purposes.

After a week in a job where I have to wear formal clothes and with a traditional business skirt that hits just above my knee, I have different opinions.

I take the train and then the bus to work. On the train, the only seats available by the time I get on are on an upper level, often facing people on the lower level. How do I keep them from seeing up my skirt? Mostly, I've been contorting my legs in all sorts of ways to remain modest. Crossed at the knee, crossed at the ankle, crossed at the knee and then at the ankle, just pressed together, stretched out and pressed together. I must look like I have ants in my pants, skirt, whatever.

Any ideas? On either matter?