Paul Walker Mourned By 'Fast' Co-Stars Tyrese, Ludacris, Bow Wow

Dave J Hogan/Getty Images

Paul Walker, Vin Diesel and Tyrese Gibson attend the world premiere of 'Fast And Furious 6' on May 7, 2013 in London, England. 

A stunned Hollywood continues to reflect on the life of Paul Walker, the "Fast & Furious" actor who died Saturday in a fiery car crash in Valencia, Calif. Among friends of the 40-year-old leading man were many stars of music, including some who co-starred with him for his most famous role, as Brian O'Conner in the thrill-seeking film series.

On Sunday, actor-singer Tyrese Gibson, who has appeared in three "Fast" films with Walker, along with the in-progress seventh edition, visited the crash site where he broke down in grief. Other friends and co-stars, including Ludacris, Bow Wow and his "She's All That" co-star Usher, have sent messages via Twitter.

FAST N FURIOUS bros forever! Once your in your in! Paul you will be missed homie! We were in London here. This was the last time i seen and even paul met me at the club that night to celebrate! We was just talking bout his love for cars in our last convo! Life is a thing i wont get! To his family stay strong!

Walker's "She's All That" co-star Usher also chimed in: