Genesis 38:14-15 ▼

14 So she took off her mourning apparel, covered herself with a shawl, and concealed her outward appearance. Then she went out and sat at the entrance of Enaim, which is on the way to Timnah, because she knew that even though Shelah had grown up, she wasn't being given to him as his wife.

15 When Judah saw her, he thought she was a prostitute, since she had concealed her face.