Try adding a few drops of peppermint oil to your lip gloss like she does. Sounds odd, but mint is known to stimulate blood flow, which intensifies lip colour and causes lips to swell.
"When I did my first film ( Leon ) the make-up artist didn't want to put make-up on me, beacuse I was so young. Instead, she used beetroot juice mixed with rose water on my cheeks and lips."