It is also completely see-through.
Recently I went to lingerie shop and asked if they sold slips. The lady (who, to be honest, did not speak English very well), handed me a bustier top. I don't even know why I tried... The best place to get a slip, if you need one (and you probably do, right?) is the thrift store. You can probably find them at Walmart or Target too but why pay more when you can pay less? I pay maximum $3 for a slip, cut the lace off the bottom edge because that lace always seems to leave a lump, and go about my merry way.
I know going to the thrift store to buy slips in not the most exciting task but next time, you are there, pick up both a nude and a black slip for a few dollars*. One day, when you put on that cute new skirt from F21 and curse the beam of sunlight that renders that skirt a complete peepshow, you will thank your past self for buying those slips and saving the day.
You should be thrifting... some slips.
*this post sponsored by all the grandmothers in the world