BBM App for Windows Phone Updated with sticker messages support, timed messages support and more.

TIMED MESSAGES: Set how long contacts have access to messages and pictures shared in a chat. See the full description for more information.
MESSAGE RETRACTION: 'Retract' a message to remove it from your BBM chat. See the full description for more information.
STICKERS & BBM SHOP: Browse and download stickers in the new BBM Shop to bring more fun to your BBM chats.
HD PICTURE TRANSFER: It's easier than ever to get a high quality version of the pictures you receive in BBM.

Download It from here

Windows Hive