jake pavelka proposing vienna girardi teal dress the bachelor

Jake chooses Vienne and proposes with a Neil Lane princess cut engagement ring. Photo: ABC

Vienna Girardi, the controversial, bad girl who won the heart of "The Bachelor" Jake Pavelka" wore a one-shoulder teal gown by designer Carmen Marc Valvo for her "fairy-tale ending" and engagement to the hunky pilot during the show's dramatic finale.

The once lovelorn Pavelka, who claims he couldn't get a date in high school, dropped to his knees and presented Girardi with a princess cut 2.72 carat diamond and platinum engagement ring that celebrity jeweler Neil Lane personally helped him select.

Not that Pavelka had any trouble figuring out exactly what Girardi wanted, as she made it very clear during their romantic St. Lucia date. Two words: "princess cut," since to quote Vienna, she's "daddy's little princess."

"I love you with everything I am," Pavelka told Girardi, an ex-Hooters waitress, who has been tabloid fodder all season and is among the most controversial "final rose" winners in the show's long-running history.

Girardi immediately said, "Yes," when Pavelka asked her to marry him. (Jake was wearing a Hugo Boss suit.)

Cary Fetman, the show's longtime stylist, told us exclusively that Girardi, 23, wanted a dress that suited the glorious St. Lucia landscape where she fell in love with the handsome 32-year-old pilot from Texas.

"Vienna wanted something very romantic and fitting of the beautiful ocean and sky," Fetman explained to StyleList.

As for Jake's sweet runner up, Oregon beauty Tenley Molzahn, she wore a stunning gold strapless gown by Pamela Dennis for her heartbreaking goodbye to the man she was in love with.

Fetman also revealed the inspiration behind Molzahn's dress, "For Tenley we wanted something that was very much Old Hollywood. Pamela made a gown that was very much in staying with a princess," he said, adding that the gold lamé shine, "was much more beautiful in person than on camera."

Dennis is the same designer Fetman often turned to when dressing former "The Bachelorette" star Jillian Harris.

It was Harris' rejection of Pavelka on her season, that led to his casting as the franchise's 14th "The Bachelor."

Did the future Mrs. Pavelka like her blinding Neil Lane ring?: a custom-designed (and signed by Lane) sparkler, featuring a 2.02 carat center princess-cut stone, encrusted and set with 70 other diamonds for a total weight of 2.72 carats.

Well, when the show's host, Chris Harrison, praised the bauble, even Girardi joked it was "just a little bling."

Um, that's an understatement. The sucker's huge!

Meanwhile, read all the fashionable details of "The Bachelor" wedding of Jason Mesnick and Molly Malaney.