AceShowbiz -

Another look at "Once Upon a Time" highly-anticipated musical episode has landed online. The newly released photo gives a first look at Killian Jones a.k.a. Captain Hook (Colin O'Donoghue) on his wedding day. The groom looks sharp in an-all black ensemble, which includes a velvet suit and a bow tie.

"I think I can probably credit [showrunner] Eddy [Kitsis] for this look," O'Donoghue told ET about Hook's suit during a joint interview with Jennifer Morrison on the show's Vancouver set last month. "We were going to go in a different direction and Eddy was like, 'It has to be black velvet!' So that's it -- it's black velvet." He added with a laugh, "It's really soft though."

Kitsis further explained why it had to be a velvet suit. "Adam and I both thought that Hook needed to have a tux that reflects his personality, so you can't go from leather to just a basic tux," he said. "We felt like he had to have a little edge to it so the velvet felt like the Hook-version of fancy."

Teasing how romantic the wedding scene would be, Morrison hoped that "brains explode" when Emma and Hook swap their vows. O'Donoghue also gushed, "I think that they'll be very happy. Because even to get to this point in this season, they've had such ups and downs. So to get to this place, within the realm of what's about to happen to them and all that kind of stuff, is pretty impressive."

Morrison recently took to her Instagram page to reveal the meaning of Emma's wedding dress. "It is a dress that represents the elegance and simplicity of classic timeless strength mixed with the delicacy of feminity and vulnerability," she wrote. "It is the ultimate balance that Emma has been fighting for throughout the 6 seasons. A wholeness. A balance."

Day 101: Emma's wedding gown! So much love and thought went into this dress. Just as #onceuponatime pulls from fairytales and literature - for the wedding, Eddy, Adam, Edwardo, and I felt it would be wonderful to pull from the real life fairytale of Grace Kelly. It is a dress that represents the elegance and simplicity of classic timeless strength mixed with the delicacy of feminity and vulnerability. It is the ultimate balance that Emma has been fighting for throughout the 6 seasons. A wholeness. A balance. Not all one thing or another - But rather, a moment that is genuinely, truly, authentically her without barriers and walls. A woman surrounded by people she loves and is loved by, willing to fight to protect them all as well as herself. The joy of a timeless balance. So honored to wear such a beautiful gown. Eduardo and his team created a piece of art once again. The perfect way to end this round of #101smiles #emmaswan #wedding #uglyducklings

Sebuah kiriman dibagikan oleh jenmorrisonlive (@jenmorrisonlive) pada Apr 22, 2017 pada 3:25 PDT

"Once Upon a Time" airs Sundays at 8 P.M. ET on ABC. The musical episode will air May 7.