Why is it so hard to tell if celebrities have a real tan or a fake baked sprayed tan?

everyone is saying these days that a spray tan is a whole lot better than a real natural tan..does the spray tan really come ...

I'm a bit confused its kind of obvious black women have real natural dark skin..but for instance kim kardashian is white and ...

I have seen most of her pictures when the weather is warm and she get's tan sometime. Is her tan fake or real?

how do you tell the difference between real and fake prada sneakers ?

Specifically, Snooki,Ronnie,J-Woww,Sammi Sweetheart,and Mike Reason why I ask this is because I find it hard to believe that ...

Just had a spray tan,hate the colour its turned out Tried bathing to get rid of it, and baby wipes nothings working Any sugge...

You've heard of Camilla belle right? She is half Brazilian and I see her skin tone sometimes and it can get olive brown type ...

Okay I going tanning for the first time tomorrow and I was wondering if using nair on your legs before you tan would be a bad...

I get tan easily but it just turned spring weather and I need easy ways to look tan without fake sprays or tanners. And I try...

Well I've sorta done it abit streaky on my arms, so how could I make it look right or get it off? Help!! X3