She has been married to Pasha Kovalev for three years, during which time they have welcomed their two children, Maven, born in December 2019, and Noa, born in November 2021.
WATCH: Rachel Riley's daughter Maven takes after dad Pasha Kovalev
Taking to Twitter on Friday to reveal the look, the former Strictly Come Dancing contestant wrote: "Giving my wedding dress another spin on brand new #CatsCountdown tonight! I was the same amount of pregnant as when I wore it the first time."
Fans were quick to react, with one writing: "Looking fabulous as ever Rachel." Another said: "Beautiful and your dress is amazing, much love." A third post read: "Brilliant! I vow to watch tonight."
Both Rachel and Pasha surprised fans by tying the knot in an intimate ceremony in Las Vegas on 28 June 2019 – at the time, Rachel with pregnant with the couple's first child.
Rachel shared this post on Twitter
As well as shunning tradition and marrying without family and friends present, the celebrity mathematician also opted for a non-conformist wedding dress. It was a short cream and pink patterned style that flattered her then baby bump, with a V-neck and a flared skirt.
During a chat with HELLO! in 2021, Rachel told us they would consider renewing their vows in the future, in order to celebrate with more friends and family members. "We only had two friends at our wedding. We were in Vegas and we just got married, so maybe one day we'll actually let people come, but I don't know. Never say never," she said.
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