Unbutton v. t. : To loose the buttons of; to unfasten.

Example:
How do you Unbutton abercrombie jeans?

Taxonomy
US & Canada, Hong Kong, Singapore, 中文, Bahasa Indonesia, China, Korea, Malaysia, Pakistan, Philippines, Taiwan, Who Do You, Do You Want To, 中秋节, levi, English, Your Attention, Attention Please.

Defination from the web:
unbutton. my love. 风趣 智慧 深邃. Unbuttoned on 5th Oct. View Post. View More. Your Attention Please! ... Levi's® provides a cheeky yet oh-so-honest avenue for you to "unbutton" these people in your own way – unrestrained, unembarrassed. ...