How to look 10 pounds thinner in photos.
Secret No. 1: Turn partially sideways to the camera, planting one foot in front of the other. Point your toe to the camera and place your weight on your back foot.
Secret No. 2: Pull head forward slightly to minimize any appearance of the double chin
Secret No. 3: Hold arms slightly away from your body. This keeps upper arm flab from flattening out and therefore appearing flabbier (much like thighs do when one sits on a couch).
Secret No. 4: Pull shoulders back, chest forward and gently suck stomach in. Be careful not to suck stomach so far in that your ribs show, thereby causing those who later see the photo to cluck to themselves in a bemused, sing-song voice, "She's sucking i-in."
Secret No. 5: If you can get away with it without looking like a "wannabe", try the look away trick. To do this, look away from the camera, then turn towards it, breaking into a smile just before the camera clicks. Your smile will appear fresh, not frozen. This trick takes practice behind closed, locked doors.
When taking a photo it's also important the photographer does not snap the picture from below. This adds another 20-50 pounds to the 10 pounds automatically and annoying added by the camera. Find out why cameras add 10 pounds in this article by Geek Sugar