Kevin Jonas: Annie Leibovitz SUMO-Size Book Launch

Kevin Jonas attends the Annie Leibovitz SUMO-Size Book Launch held during 2014 Oscars Week at Chateau Marmont on Wednesday night (February 26) in West Hollywood, Calif.

“So this happened tonight met terry Richardson #terryisawesome,” the 26-year-old singer tweeted at the event.

PHOTOS: Check out the latest pics of Kevin Jonas

The night before, Kevin‘s brothers Joe and Nick hit up the 2014 Vanity Fair Young Hollywood Party held at No Vacancy in Los Angeles.

Kevin was also spotted at the TheWrap‘s 5th Anniversary Oscar Party hosted by Peroni Nastro Azzuro at Culina at the Four Seasons in Beverly Hills on Wednesday night.

In case you missed them, check out the latest photos of Kevin and his wife Danielle‘s newborn daughter Alena Rose!