The good news? Plenty of stars walked the red carpet wearing beauty products you can pick up yourself at a nearby drugstore — so you, too, can cop Perry's luminous skin without the need for a Grammys invite. Even Beyoncé’s majestic look was created with makeup anyone can find in a CVS aisle. If that isn’t excellent news to hear on a Monday morning, then we don’t know what is. Click through to see the affordable products that the pros used last night — and be sure to set aside some time during your lunch break to shop them guilt-free.