Where is this all coming from? Well, just watch, and hopefully you'll see.
Did you realize how Selena's video seemed to be more about her than the audience? "Try" includes not just the artist, but other girls participating to find beauty inside themselves. This gives the wrong impression that as long as one still has attention, she is good in life -with or without makeup. According to James 1:27 we, as Christians, should minister to the world, yet keep our personal status on the down-low.
The quote, "Who says your not perfect?" also nags at me. Again, the Bible clearly states the opposite of this. Take Romans 3:23 for example, "For everyone has sinned; we all fall short of God's glorious standard (New Living Translation)."
Hold on, I've got another one to throw at you. "Who says, you're not the only one that's hurtin'? Trust me, that's the price of beauty," is a false statement. The fact that beauty sometimes comes from pain is a completely different argument than wether or not one has to pain his or herself to feel beautiful (which, by the way, is also absolutely not true).
I'll end this side of the discussion with one last thing. Unless Selena Gomez has naturally dark eyelashes and fair skin, it's obvious that she is still wearing makeup (although minimal) or being photoshopped in the end. The crowded, quick shots and far away clips allude to this thought as well.
On the other hand, Colbie includes seven-some girls as main characters in her video and does not indicate perfection on any level. Selena thinks hurt is the price of beauty, while Caillat says, "You don't have to bend until you break." Her lack of makeup and airbrush/photoshop is very believable.
So you see, when a movie star erases what he or she worked so hard to produce, people are going to start asking questions. But you must remember, it's up to the people to decide if the right move was made or not.