This may help you some.

Thanks, but I already know it has to do with eating right and burning more fat, but I don’t need anymore fat to burn =\ I’m already skinny as it is…

Everyone has abs. They’re always there. But if there’s is fat over them, you can’t see them. Unfortunately, the only way to get them to show is to eliminate the fat over them. Some people don’t want to get too skinny, and the downside is that you’ll never completely uncover your abs. The way the fat is stored there, it disappears from the top down. That last little bit of fat on your lower abs is blocking the muscle. No matter how rock hard and perfect your lower abs get through exercising, that last little bit of fat will hide them.

If you’re worried about getting too skinny, consider weight training. A lot of people, especially women, think that they will become gorillas over night, but it really takes a lot of work to get big. The secret is replacing the curves from fat with curves from muscle. That way you can have the abs you want, but not lose the figure you like.

Eat low fat foods to get rid of the excess stomach fat. Train at least twice a week, don’t overtrain because you can hurt yourself. Also running would help to rid you of the stomach fat.

Try swimming. Doesn’t sound like it’s going to target the lower abs, but for some reason it does help. It’s easy on the joints and tones the entire body.

I do sit ups and I do leg lifts. Together and apart. In sets of eight. On my back.
I also find that twisting and Belly Dancing helps.
Isolating the upper abdominals is not easy.
I have been working out my whole life.
LOL I am over forty five and I still fit in my size four jeans and size seven also. Depending on the make.

@what_some_above have said, “toned” abs, in respect to them being visibly toned, isn’t about their strength so much as the amount of fat, or lack of any fat at all, over them. My guess is that your lower abs do look pretty toned. Maybe not the raw-muscle look, but still toned.

I may be repeating some of your excercises, I don’t know the terms exactly:

—Lying on your back for all of these—
Bicycles, making sure the legs stay as long and extended as possible, will work more lower abs.
Holding your legs straight and lowering and raising them with control
Holding your legs up straight, perpendicular to the floor and your body, and lift while keeping them completely perpendicular. You won’t go very high, and don’t use any leg momentum to move them, just your lower abs.
Crunches, lifting both your shoulders and lower back off the ground (normal crunches and the reverse crunches above simultaneously)
With your feet on the ground and knees bent, slowly rolling the small of your back (working your lower abs)
Crunches, but with your legs up in the air, bent at a ninety degree angle (make sure to be pulling in your stomach)

Keeping legs in the ninety-degree bent position, and with your upper body lifted and held—balancing on your butt, basically—allowing legs and core to pull away, come together, pull away, come together. Keep your shins perpendicular to the ground and your knees together. Concentrating on your lower abs. You can also twist your upper body to face the right or the left. You can hold your arms wherever, I find best places are to the sides of your legs or spread out in second position—airplane wings.