"The Bachelor" season finale concluded with Sean Lowe's proposal to 26-year-old graphic designer, Catherine Giudici.

Lowe, 29, a Texas insurance agent proposed in Thailand, after reading a note from the Seattle native, part of which read, "I know neither one of us is perfect, but I truly believe we are perfect for each other."

Monday's episode featured a stunning engagement ring from jewelry designer Neil Lane, who helped the reality star select a cushion-cut diamond in a cushion-shaped halo with a pave' diamond-encrusted split-shank setting.

Lane also designed Christina Applegate's wedding ring and Miley Cyrus' antique-style engagement ring.

Giudici posted a close-up of her engagement ring on Instagram with "Rock Part Three."

The ring, which a giddy Giudici calls "classic and timeless," features a center diamond exquisitely set with 164 smaller round diamonds.

The couple told show host Chris Harrison that they haven't sent a date yet, during the "After the Final Rose," live special, which aired immediately after the finael.

"But we have decided that because our relationship started and cultivated on a TV show, we're going to have it on a TV show. ABC is going to cover our wedding!" Lowe said.

Afterwards they also appeared on "LIVE! With Kelly and Michael" and "Good Morning America" on Tuesday, to discuss upcoming wedding plans. Lowe announced on GMA he is the surprise contestant on the upcoming season of "Dancing With the Stars."

Below is Sean Lowe's proposal to Catherine Giudici on "The Bachelor" season 17 finale.