Gloriana member Tom Gossin and his wife Jamie are new parents! The couple welcomed their first child, a son, on Thursday (Jan. 7).

Casimir Latrille Gossin was born at 5:35PM. Tom Gossin shared the good news with fans on the band's Twitter account, calling it the best day of his life.

The Gossins have been married since October of 2013. Tom Gossin proposed to his wife (nee Jaime Moffett) on their 10th anniversary, in March of 2012.

However, it hasn't been all good news this week for Gloriana: Also on Thursday, Rachel Reinert announced that she has left the group, leaving Tom Gossin and his brother, Mike Gossin, as the former trio's only two members. Gloriana began in 2008 as a quartet, until former member Cheyenne Kimball left the group in 2011. The band released their third studio album, Three, in June.

“We just felt creatively free on this one,” Reinert told The Boot in advance of the project’s release. “I think that getting past everything that we went through on the last album was a hurdle of itself, so to still be here doing this, this one just felt liberating, really.”

2015's Country Music Babies