Season four “Project Runway” winner Christian Siriano announced he’s engaged to longtime boyfriend Brad Walsh, the fashion designer revealed on July 28 via Twitter.

"Yesterday @BradWalsh and I exchanged engagement bracelets!" the 27-year-old Siriano wrote.

Siriano and Walsh, who is a visual and recording artist, have lived together since 2010.

“Christian started getting much more into antique and vintage finds,” Walsh told lifestyle blog Byrne Notice. “So the new space sort of became the canvas for that, and slowly the modern furniture was phased to the office or out of the picture entirely.”

According to E News, the couple have also worked together on runway shows, with Walsh creating the music for many of Siriano’s shows.

We've told our moms so now we can tell you. Yesterday we exchanged engagement bracelets,” Walsh also tweeted on July 28.

Siriano rose to fame in 2008, after winning the the fourth season of Heidi Klum’s fashion design reality TV show. He has since launched his own fashion line and has dressed, among others, Christina Hendricks and, Heidi Klum herself.