How to hide your last seen profile picture on whatsapp

Description
WhatsApp Messenger is a smartphone messenger available for Android and other smartphones. WhatsApp uses your 3G or WiFi (when available) to message with friends and family. Switch from SMS to WhatsApp to send and receive messages, pictures, audio notes, and video messages. First year FREE! ($0.99 USD/year after) WHY USE WHATSAPP:
★ NO HIDDEN COST: Once you and your friends download the application, you can use it to chat as much as you want. Send a million messages a day to your friends for free! WhatsApp uses your Internet connection: 3G/EDGE or Wi-Fi when available.
★ MULTIMEDIA: Send Video, Images, and Voice notes to your friends and contacts.
★ GROUP CHAT: Enjoy group conversations with your contacts.
★ NO INTERNATIONAL CHARGES: Just like there is no added cost to send an international email, there is no cost to send WhatsApp messages internationally. Chat with your friends all over the world as long as they have WhatsApp Messenger installed and avoid those pesky international SMS costs.
★ SAY NO TO PINS AND USERNAMES: Why even bother having to remember yet another PIN or username? WhatsApp works with your phone number, just like SMS would, and integrates flawlessly with your existing phone address book.
Download the latest version of whatsapp Version 2.11.169 (not yet at the play store):
Can hide your last seen, profile picture, status (In otherwords, say bye bye to stalkers) You can as well pay for your friend's yearly subscription (Called gift pack).
So, download it and stalkers will forget you