Kirsten, Welcome to Houston in advance! For a while till, we bought our home, we lived off Memorial & Dairy Ashford and I loved going to Buttons and Bows, which sells fine fabrics, various unique buttons, Swiss embroidery and smocking materials. It is in a small sidewalk shopping center on Memorial near D.A. Across from the store is/was another fabric store that sells/sold reproduction fabric. It was a fabulous place to spend a few hours. Someone mentioned that there is a TSWLTH near where you will live, and there's also Hancock's nearby as well as I'm sure you'll easily find a Hobby Lobby.
High Fashion Design is a fabric store of more than 30,000 square feet that is downtown on Louisiana St. I went a couple times before the city started the street projects in that area which, I understand are now complete, but I haven't gone back yet.
Now we live outside the city limits on the NW side between Houston and Cypress, just off Hwy 290, which is the road to Austin, less than 2 hours from the house. Near where you go over to Galveston, there are 2 great fabric stores, Sew Contempo and Fabrics ETC. I can't remember their street addresses, but they are in the phone book. I have purchased fabric, buttons and other accessories from both stores and have found the clerks polite and knowledgeable about the merchandise, which is important to me. Emily