Choosing a Lining Fabric for your Swimsuit by Melissapher Follow Lining on my swimming suit Wondering about how to find a good lining? Or if you should be lining your suit at all? I'm happy to answer any questions you have in the comments. I talk about the linings used (and not used) for my vintage bikini. Discussion 3 Log In to Post a Comment Jennifer Jones Rossotti commented 8 years ago Question. Do you know where to get the padded lining used in swim tops to make them more modest? Not talking about foam push-up pads. Terry Brown Springer commented 8 years ago I'm replacing the old lining cuz my suit looks new on the outside and I love it for the twice weekly water aerobics classes. Problem is that I don't know if the lining fabric should be stretching side to side, or up and down. I know you posted this a while ago, but am hoping you will see this and answer ASAP. My bra section is floating out without the lining (eek!) and I don't want to miss classes this time of year, have to keep from gaining weight! Thanks in advance for any suggestions you can give. Melissapher replied 8 years ago You want to be able to stretch the fabric side to side.