WHY IT WORKS
"Sienna Miller's brick red lip has no hard edges and looks almost like a stain with a fresh balm on top. Wearing brick red in a sheer texture gives it a natural ease. If you're new to reds, going with a stain like this is the easiest transition," Goodwin said.
WHAT TO TRY
"Stains by Laura Mercier can get the look like Sienna's. With any lip balm on top, it's simple, gorgeous and easy."