The Goop creator and A-list actress was spotted driving solo and leaving the famous Chateau Marmont.
Paltrow appeared to be dressed down for her evening out, wearing a black long-sleeved sweater and no makeup.
Martin, who is one of many stars slated to attend, will be on hand to induct Peter Gabriel.
Martin's been keeping a fairly low profile since he and Paltrow announced that they were separating last month, but the Hollywood star has been out in public a bit more over the last few days.
Earlier this week Paltrow was spotted at a private gym in L.A. and wore one special accessory during her workout: her wedding ring.
She also was seen wearinf the band in a Twitter picture honoring son Moses' 8th birthday.
In the sweet photo, Paltrow wrote, "Moses Bruce Paltrow Martin turns 8 today. We love you!"
The black-and-white snapshot shows her snuggling up to her not-so-little one and smiling at the camera.
Two weeks ago, Paltrow and Martin released the following statement regarding the end of their marriage: "We have been working hard for well over a year, some of it together, some of it separated, to see what might have been possible between us, and we have come to the conclusion that while we love each other very much we will remain separate."