MailOnline may earn commission on sales from these product links The musical pack - the sisters form band Haim - were indulging in some girly vacation time on the high seas after jetting off to the tropical state.
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Check daily updates and enjoy for free! Not afraid to have a little laugh at herself, the singer captioned the image with a reference to a Saturday Night Live skit about her, saying 'She's always wearing, like, a 1950's bathing suit'.