Catherine Giudici proved her love and got baptized before she ties the knot to the former Bachelor star Sean Lowe.

The reality star posted a photo on Instagram on Jan. 12 with the caption, "Us with Jay the Baptist."

In the snapshot, Guidici stands to the left of her soon-to-be father-in-law Jay Lowe while her friend, Laura Caperton, is to his right. All three are also wearing white religious robes at the ceremony, which took place at the Plymouth Park Baptist Church in Irving, Texas.

"This brings my heart so much joy. Got to watch my dad baptize @catherinegiudici this morning," Lowe wrote on Instagram along with a photo from the ceremony.

Mr. Lowe spoke with RadarOnline about the baptism and revealed that there was no pressure on Guidici to convert. The decision was solely her own.

"We didn't lay down a bunch of rules for her. That's not us at all," he told the website. "Becoming a Christian was a personal decision she made herself and had nothing to do with Sean or impressing the family."

Sean Lowe & Catherine Giudici's Wedding Website With Bridal Party, Registry & More

He will also be the one to wed the couple at their upcoming nuptials. Sean previously explained why the couple chose his father for the role.

"I can't think of a more godly man to conduct the ceremony," he told Life & Style last November. "My dad has had such a powerful and positive influence on my life, I thought it was only fitting to have him officiate our wedding."

The couple, who got engaged on The Bachelor last spring after Lowe proposed with a 3.15-carat ring, will say "I do" on Jan. 26 in a ceremony set to air live on ABC.

Tags: Sean Lowe and Catherine Giudici