After months of in-story build-up, today's the big day for Batgirl's former roommate Alysia Yeoh. The character's wedding to activist Jo tie the knot in today's "Batgirl" #45 in a wedding that is being heralded as the first transgender wedding in mainstream comics.

Yeoh, who debuted in 2011's "Batgirl" #1, came out as transgender in "Batgirl" #19, making her one of the few trans characters at Marvel or DC. MTV talked to current "Batgirl" co-writer Brenden Fletcher, who writes the book along with Cameron Stewart, about today's monumental issue and Alysia's marriage to her activist girlfriend Jo.

"This was something we talked about when we took the book over and we didn't know if we were ever going to get a chance to play it out, because we had so much heavy lifting to do in our first arc that there wasn't room to play up this plot," Fletcher told MTV News. "And we didn't know that we were going to be successful at all and get to do any more than six issues.

"So thankfully we've gotten to continue working on the series, and we've been able to do these things that we've always wanted to do. One of them was the wedding. One of them was taking [Batgirl's roommate and tech assist] Frankie to the next level, and one of them was just allowing Babs to have regular Batgirl adventures without all of the looming darkness of Gotham City crushing down on her."

Series artist Babs Tarr also spoke with MTV, revealing the thought that went into designing Alysia's dress for her big day.

"I knew I wanted [the dress] to be really classy and beautiful and classic and, you know, just like Alysia," said Tarr. "She has this like kind of big sister personality to Babs... she kind of dresses older, like a really Madewell kind of flavor, so I kind of wanted to give her something really traditional and beautiful and elegant."

Tarr then revealed her inspiration for putting Jo in a suit. "For visual interest I didn't want to have both the the girls in wedding dresses, and I think Jo's personality fits a suit," she added. "I just thought -- it's cute. I did it 'cuz it's cute!"

Compared to the last time that a wedding made headlines at DC, back when it was revealed that Batwoman's proposal to Maggie Sawyer would never lead to nuptials due to an edict that "heroes shouldn't have happy personal lives," Fletcher said this wedding was met with no resistance from editorial.

"We're just looking at what the best story is for the characters and just trying to push forward with that," Fletcher said. "We just have to try to do what it is we want to do and in our case, Editorial has been so, so, so supportive. It's a fantastic experience."

While Alysia and Jo will be on their honeymoon for the next few issues, Fletcher teased that big things may be ahead for the characters as part of a "massive status quo" shift around "Batgirl" #50. "Things will have changed in Barbra Gordon's life and of course she'll want to turn to one of her best friends, and that may usher in a new role for Alysia in the book," said Fletcher.

"Batgirl" #45 is in stores now.