Kristen Stewart stopped us in our tracks when she attended the video premiere of Paul McCartney's new track "My Valentine" which was co-hosted by his daughter Stella over the weekend. It's rare to see the Breaking Dawn star wear lipstick — though we wish she'd bust it more, it really suits her — and we can't help but wonder if it's because the dreaded it-might-end-up-on-my-teeth scenario. It's the thing that keeps a lot of people from wearing a punchy pigment but there's actually a nifty trick that will stop a potential beauty faux pas in its tracks. It's the last step in the lipstick application process so once you've lined the lips, filled them in with liner and applied two coats of your chosen shade (blotting in between), pop the lipstick tube in your mouth and gently pull it out. This takes all the excess lipstick with it so that it doesn't end up on your teeth. It's the same principal as sucking on your finger — a tip that makeup maestro Dick Page recommends — but far less messy. Voilà. Pretty without the pitfalls.