Actress Kate Hudson and fashion designer Stella McCartney were also in attendance according to Mail Online. Ms Zhukova is the ex-wife of businessman Roman Abrahomovic and the marriage was 24 hours earlier than expected with guests keeping the date a secret. Beatrice was spotted with her own fiancee property developer Edoardo Mapelli Mozzi as the pair went skiing ahead of the wedding.
Model Karli Kloss was also in attendance.
Ms Kloss married Joshua Kushner last year.
Joshua Kushner is the brother-in-law of US First Daughter Ivanka Trump.
Princess Beatrice was amongst the guests at a surprise wedding (Image: GETTY)
She attended the wedding of Stavros Niarchos and Dasha Zhukova (Image: GETTY)
CBS News anchor Gayle King was also pictured in attendance.
A source said: “This will be an elegant and very smart affair befitting to the couple's style. Everything will be in good taste.
“There will be caviar and champagne, lots if it, but there's also a disco tonight in the hotel which has been booked entirely for the guests.
“The emphasis is on fun and celebration.”
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Gayle King ventured to St.Moritz (Image: GETTY)