This summer, he had a guest spot on the Hulu series Casual — where he bared his backside for the camera.
The 24-year-old hasn't acted since — save for a cameo in the finale — and has instead focused her energy on her hard rock/post-grunge group, The Pretty Reckless, of which she is the singer.
The band has released three albums (two since GG ended) and Taylor has kept busy touring, and is currently in Europe playing shows.
While Blood & Oil didn't last, his relationship with his co-star Rebecca Rittenhouse did, and the two are still going strong two years later. After originally auditioning for Nate, Ed was given bad boy Chuck, instead — and the showrunners anxiously awaited for the British actor's work visa to be approved so they could move forward.
He's only been in the US for a month when he got the part.
Her singles included Somebody to Love, our Love's a Drug, and vocals for Cobra Starship's Good Girls Go Bad.
She finally released her own album, Heartstrings, in 2014, and went on tour the following year.
Though the star keeps very quiet about her personal life, in 2014 she married The OC's Adam Brody, whom she met while filming the movie The Orange. Fans haven't seen much of 30-year-old Penn since Gossip Girl ended — and that's the way he likes it. When the show began, the then-20-year-old had already worked quite a bit, with roles on series like The Young and the Restless, Do Over, The Mountain, and The Bedford Diaries behind him.
He'd also had some experience playing a heartthrob in John Tucker Must Die, and had a similar role in Easy A opposite Emma Stone while GG was still on the air.
Jessica left Gossip Girl before the show's last season, coming back only for a quick cameo in the finale.
At the time, there was rumored on-set drama, with some sources reporting that Ed — whom Jessica dated and then split with — wanted her written off the show.
But the Gossip Girl life — starring in the show and also dating his on-screen girlfriend Blake for several years — seems to have worn on him, and he's lived a quieter life after the show.