The best discount code for lilunderwear.com is 'daph15', which offers a 15% discount. Other notable codes include 'IE10' and 'XY10', both providing a 10% discount. There's also a code, 'DQLM4HC4', that can be used for a discount at checkout. Please note that these codes are subject to change and may have certain terms and conditions. It's recommended to check the website for the most up-to-date information. If these codes are not working, please try again later or contact the customer service of lilunderwear.com.