I found this to be a concern of mine and it might be of help to others here.

Tips and Tricks to Conceal a Muffin Top

Say no to tight and low-waist jeans! This is not the time to flaunt your belly button. They perfectly bring out your muffin top. If you have any lying around in your closet, let them remain there. Opt for high-waist jeans that will make you feel more comfortable.

Tops are equally to blame. The wrong top can highlight your inflated waistline. Choose tops that are not too tight, and flow freely around your body. But they should not be too loose either, or it might look as if you are wearing a maternity top! A top that's a size too small will not do you good, instead buy one that's a size bigger. Pleated tops that have gathers at the top, but are loose and flare away just below the bust will definitely conceal your muffin top. Banded blouses and loose-fitting A-line tops are also a very good option to mask the bulge around your waist.

As for men, when it comes to shirts, wear ones that flow freely around the waist. Anything that clings to your abdomen should be avoided at all costs. Choose from loose T-shirts, nothing that is too snug around your abdomen. Again, not too big that it looks out of shape!

Buy tops in "dark colors". A dark color tends to make you look thinner, especially the upper torso.

( a print pattern will also take your eyes aways from those unsighlty bumps)

A jacket, vest, or a cardigan over your top is an excellent camouflage against an unsightly muffin top. Of course this is an option best reserved for the colder months. Fabric that is woven with high quality knitwear and has a thicker texture should hug your body well, without outlining your body shape.

All you women, do not forget to put on a camisole. A camisole beneath a fitted top is your best bet against a muffin top. Inner garments that smooth out your abdomen by concealing them are a good option.

If you love wearing dresses, select from ones that are brightly colored and have bold prints. Wrap dresses are another good choice, they also hide the unpleasant ring of fat around the tummy.

Trapeze dresses, even though they are loose-fitting, can make you look flattering and obscure the bulge around your midriff. These dresses usually come in single, solid colors, and take the attention away from the abdominal section towards the arms and legs, which are left bare. Sometimes these dresses are equipped with an extra layer of folded fabric, which is ideal for those who want to hide an unshapely figure.

If you are headed to a party or a prom and intend to wear a gown, look for one with an empire cut. With a high waistline that's right below the bust, empire dresses can be worn by those with a burgeoning waistline because they skim over the part of the body you want to hide!

Accessorize. Beautiful pieces of jewelry, maybe drop earrings or a pretty necklace, combined with a scarf, and even a new and different hairstyle will draw attention away from your waistline.

Maintain a positive body language. Keep a straight posture, and no matter what your wear, learn to carry it off with poise and confidence.

And lastly, and most importantly, lose that muffin top, so you do not have to worry about hiding it in the first place! Exercise! Hit the gym, and do waist exercises that will trim off any excess fat around your midsection. Do abs and crunches. Eat healthy. Eat foods high in protein and low in calories.

So these were a few tips that will certainly come in handy to hide your muffin top. But, as a rule, think of them as temporary solutions, and your target should be a flat tummy, or at least a waist with no excess fat that you have to worry about. Start exercising and consume a low-fat diet, so till the time the next summer is here, you can flaunt your midriff without worrying about a muffin top!

PS... if all else fails, get some spanx or something similar.