Perhaps that was for a photoshoot? That dark lipliner, light lipstick is horrible. I have seen girls use black liner!! Horrible. Less is more.ITA about the lipliner, missmustard.
To OP - when choosing a lip liner, try to choose one that matches the natural shade of your lips. I've seen many young girls who do the dark lipliner/light gloss thing and it doesn't look all that great IRL.