Lily Allen performed for Monaco's elite on Saturday night as she took to the stage at the Rose Ball 2015.
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MONTE-CARLO, MONACO - MARCH 28: Lily Allen performs during the Rose Ball 2015 in aid of the Princess Grace Foundation at Sporting Monte-Carlo on March 28, 2015 in Monte-Carlo, Monaco. (Photo by Pierre Villard/SBM/PLS Pool)
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The singer looked fab in a custom-made silver fringed Chanel gown, but while we were loving the handiwork of Karl Lagerfeld - who also attended the bash - we weren't entirely sure about the enormous floral pink cape version of Little Red Riding Hood.
MONTE-CARLO, MONACO - MARCH 28: Lily Allen performs during the Rose Ball 2015 in aid of the Princess Grace Foundation at Sporting Monte-Carlo on March 28, 2015 in Monte-Carlo, Monaco. (Photo by Pierre Villard/SBM/PLS Pool/Getty Images)
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The bash was in aid of the Princess Grace Foundation, and members of Monaco's royal family attended.
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MONTE-CARLO, MONACO - MARCH 28: (L-R) Princess Caroline of Hanover, Prince Albert II of Monaco, Lily Allen and Karl Lagerfeld attend the Rose Ball 2015 in aid of the Princess Grace Foundation at Sporting Monte-Carlo on March 28, 2015 in Monte-Carlo, Monaco. (Photo by Le Palais Princier de Monaco/SMB via Getty Images)
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Prince Albert and Princess Caroline were joined by her son Pierre Casiraghi and daughter, Charlotte Casiraghi, as well as Pierre's fiancée Beatrice Borromeo, who also looked stunning in a silver gown.
Beatrice, a Newsweek journalist, hit the dance floor with her hubby to be, as well as Charlotte, who looked pretty in a sequinned pink and black dress.
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MONTE-CARLO, MONACO - MARCH 28: (L-R) Charlotte Casiraghi, Beatrice Borromeo and Lily Allen attend the Rose Ball 2015 in aid of the Princess Grace Foundation at Sporting Monte-Carlo on March 28, 2015 in Monte-Carlo, Monaco. (Photo by Pierre Villard/SBM/PLS POOL/Getty Images)
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MONTE-CARLO, MONACO - MARCH 28: (L-R) Charlotte Casiraghi, Beatrice Borromeo, Pierre Casiraghi and Lily Allen attend the Rose Ball 2015 in aid of the Princess Grace Foundation at Sporting Monte-Carlo on March 28, 2015 in Monte-Carlo, Monaco. (Photo by Pierre Villard/SBM/PLS POOL/Getty Images)