Ellen DeGeneres, Rose McGowan and Matt Bomer are among the celebrities offering support to Wentworth Miller after he came out gay.

The 41-year-old Miller publicly came out gay in the course of declining an invitation to attend a film festival in Russia.

(Related: Wentworth Miller declines Russian film festival invite; says he's gay.)

“I'm proud of Wentworth Miller for speaking out in support of equality,” Ellen DeGeneres tweeted to her more than 21 million followers. “Russia doesn't know what they're missing.”

“Well done, Wentworth Miller. Bravo,” messaged Neil Patrick Harris.

Rose McGowan added: “Happy for Wentworth Miller.”

Amaury Nolasco, who worked with Miller on Fox's Prison Break, also tweeted his support.

“I applaud my boy, Wentworth Miller's courageousness. I'm proud of you brother, for standing up for what you believe in. Enough is enough!” he wrote.

Matt Bomer, the openly gay star of cabler USA Network's White Collar, told E! News that he was “really proud” of Miller.

“Wow, I think it's really bold and incredibly classy how he came out and did it. I am really proud of him. It's very reflective of his amazing character,” Bomer said.