The phrase "to line the dress" means to sew an extra layer of fabric on the inside of the dress. This lining helps to make the dress more comfortable to wear, improve its appearance, and protect the outer fabric. Full definition
I paired a classic A line dress with with this jacket and added a pop of pink to give it a little color. (abyersguide.com)
One thing was that I always wanted an empire line dress with lots of flare. (fashion.bhushavali.com)
This fully - lined dress features a straight line shape, delicate lace detail on the sleeves and chest, and has adorable bell - sleeves. (kindlyunspoken.com)