"This was the clear winner," the designer says of the 30-plus-pound dress

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It’s official: Rachel Lindsay is engaged to Bryan Abasolo! Whether you were surprised or not by that dramatic finale, you probably weren’t surprised that Rachel left us with a truly stunning look for the proposal. She wore a silver beaded gown with a sexy high slit by Randi Rahm, a designer who is not only a Bachelor franchise favorite, but one whose designs Rachel herself has worn seven(!) other times throughout the season — including her gorgeous premiere dress.

Credit: Courtesy Cary Fetman
  • For more on Bachelorette Rachel Lindsay’s engagement to Bryan Abasolo, including their thoughts on their big debut and plan for the future, pick up this week’s issue of PEOPLE, on newsstands Friday

Like her premiere dress, which weighed 25-30 pounds (depending on who you ask), the fully beaded look Rachel wore for the finale weighed “at least” 30, the designer tells PeopleStyle exclusively. However, the heaviness didn’t deter our Bachelorette. “Once Rachel saw the dress in person, there was no question which gown she was going to pick. This was the clear winner,” says Rahm.

Credit: Courtesy Cary Fetman

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And although Rachel did not get to keep the couture piece, it’s solidified its place in TV history. “It was one of those moments that takes your breath away. We couldn’t be happier with how stunning she looked,” Rahm says.

Credit: Courtesy Cary Fetman

After all, Rachel does have her sparkly new three-carat Neil Lane engagement ring to take home. And, you know, a sexy new fiancé!

What did you think of Rachel’s finale dress? What was your favorite look of the season?