Girls, Are spanks the best shape wear?

I am attending a semiformal event. I have picked out a dress. I could use some shape wear. Are Spanks about the best since I hear of them all the time? Should I be looking at other brands? Is it usually ok if I try the shape wear under my dress. I want to get the correct shape wear that will maximize how the dress looks. Thanks.

Girls, Are spanks the best shape wear?
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