Undie Sunday? What does that mean?! Undie Sunday is a day to bring brand new socks and undergarments to donate to the Hope Network. We’re asking everyone to bring a package of underwear in your size or your child’s size. The biggest need is underwear of all sizes, but bras, socks, and men’s t-shirts are also needed. Undie Sunday is Sunday, May 21. You can drop your donation in the red barrels located just inside the church entrances.