Their wedding ceremony will air live on ABC on Jan. 26. "The Bachelor: Sean and Catherine's Wedding" will be hosted by Chris Harrison.
Lowe was named the franchise's 17th bachelor after he was rejected by Emily Maynard on "The Bachelorette."
Other couples to marry from "The Bachelor" or "The Bachelorette" include Trista Rehn and Ryan Sutter, Jason Mesnick and Molly Malaney, and Ashley Hebert and J.P. Rosenbaum.
"The Bachelor" returns in January with Juan Pablo Galavis looking to find his match from 25 eligible women.