[QUOTE=ManiacQuilter2;7142824]No, I have never used clothing or bed sheet. I was taught by Harriet Hargrave to use the best fabrics that you can afford. I want my quilts to be on Antique Roadshow in the year 2075!![/QUOTE
Perhaps "used" is the best one can afford.
As far as I can tell - good/suitable fabric is still good/suitable fabric - even after it has been made into a garment or bedding - and regardless of where one acquired it - or how much one paid for it.
As an aside - some of the most expensive cotton fabric I ever purchased was for a baptismal gown. A very thin (sheer), tightly woven fabric - very unsuitable for a quilt - but so soft!