Hang the garment in a steamy bathroom
Use a handheld garment steamer
Mist the fabric lightly with water and smooth it by hand
Tumble dry on low with a damp towel for a few minutes
Roll the garment tightly and leave it for a short time
Press the fabric with a flat hair straightener on low heat
Lay the item under a mattress or heavy books
Use a wrinkle-release spray
Smooth the fabric while it is still slightly damp
Shake the garment out and hang it immediately after washing