Get 20 percent off all adult merchandise at Old Navy when you spend $100 or more. This coupon valid online only Feb. 18, 2010. Use code ONSAVE20 when checking out. One per person. Shipping is a flat fee of $7. This shipping offer also covers purchases you make at Gap, Banana Republic, and Athleta.

Old Navy has a section for feminine accents, like embroidered scarfs, tanks lined with a frill, and dresses. Some are already on sale. The men's section has a page for $5, $10, and $15 deals, including T-shirts from $8, boxers from $6, and flip flops from $2.50.

The discount does not apply to maternity wear, unfortunately. Enter the code on the billing page to make sure it applies.

Old Navy is also having an online kids clothing sale, with tops and tanks as low as $6 (orig. $9.50), dresses and polos for $8 (orig. $12.50), and hooded T-shirts and sweatshirts for $10 (orig. $19.50).

Caveats: online only, cannot be combined with other discounts.

You can also use coupon code ONGIVE50 to get free shipping on purchases of $50 or more on baby, kids, and maternity clothes.