http://www.thecompanystore.com/dept.asp?dept%5Fid=3002
http://www.overstock.com/Home-Garden/Duvet-Covers/1399/subcat.html
http://www.smartbargains.com/go.*****?pagename=cat&sdr=true&deptid=3&catid=123&t=sfind.dept-3.cat-123.see-all.
Or, as "rejoicesong" said above, go to Macy's website.