How Old Do You Look? This Site Tells You In Seconds.

#1 How old do people really look?

You're only as old as you think you are.

Or in this case, as old as a computer algorithm thinks you are.

In a machine learning experiment that's taken social vanity to new heights, Microsoft has created a website http://how-old.net/ that tells you how old you look just by analyzing your photo.

#2 Justin Bieber is 21 - but even with the suit and 'stache he still looks like a teenager. According to facial detection software by Microsoft, that is.

#3 Microsoft pegs Prince George at 2. Not bad -- he celebrates his second birthday in July -- but they got the future king's gender wrong.

#4 Proof that Madonna never ages: The 56-year-old singer fooled the website, which thinks she's just 31.

#5 Obama trusted Microsoft, but it failed him. Mr. President is 53, but this website did not agree to this, adding 5 years in his age.

#6 Fresh fruits and vegetables are helping Michelle Obama not to age. She's 51 but Microsoft has made her happy as it thinks she's just 37.

#7 If the computer's right, then Vladimir Putin, who is actually 62, has been eating a lot of fruits and vegetables as well.