Valderrama walked the red carpet for the Kind Los Angeles: Coming Together for Children Alone event at Helms Design Center, a charity that supports unaccompanied migrant and refugee children.
The "NCIS" star was spotted earlier this week heading back to the set of the show after spending a lot of at the hospital where Lovato has been since the incident on July 24.
As The Blast previously reported, a source close to Lovato says "Wilmer is one of the only people who has been around her, besides her mom."
Valderrama was one of the first people who rushed to be by her side and our sources say Demi and her family are grateful for the “That 70s Show” star.
“These are the people that really care about her,” our source says.