Pippa Middleton Flashes Her Giant Engagement Ring in a White Dress in London -- See the Pics!

Pippa Middleton's engagement ring definitely doesn't disappoint.

Pippa Middleton's new engagement bling is a thing of beauty.

The 32-year-old sister of the Duchess of Cambridge recently got engaged to boyfriend James Matthews, and gave us all the first look at her ring when she stepped out in London, England, on Tuesday. The bride-to-be was fittingly rocking a white, eyelet knee-length dress and flashing a big smile.

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When a reporter asked her how she felt, Pippa responded, "Couldn’t be happier," an eyewitness tells ET.

Matthews, who runs the British hedge fund Eden Rock Capital Management, popped the question on Sunday in England's Lake District. The couple has been dating on and off since 2012, and rekindled their relationship in January after Middleton split from her ex, Nico Jackson, last October.

And it looks like Middleton's family couldn't be more supportive.

"The Duke and Duchess of Cambridge are absolutely delighted with the news," a Kensington Palace spokesperson tells ET about the exciting news.

WATCH: Pippa Middleton Flashes Lots of Leg at Wimbledon

Middleton and 40-year-old Matthews plan to tie the knot next year.

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