40th Sister-in-Law Birthday Cards

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      Celebrate your sister-in-law’s 40th birthday with a card that shows how much she means to you. Browse heartfelt, funny, and elegant designs perfect for the big 40.

      14 products
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      40th Sister In Law Badgers Birthday Card Milo's Gallery - Default Title (B0CRXWM1FB)
      40th Sister In Law Badgers Birthday Card Milo's Gallery - Default Title (B0CRXWM1FB)
      40th Sister In Law Badgers Birthday Card Milo's Gallery
      £3.95
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      40th Sister In Law Birthday Card Retro - Default Title (B09Q7GJWRB)
      40th Sister In Law Birthday Card Retro - Default Title (B09Q7GJWRB)
      40th Sister In Law Birthday Card Retro
      £3.95
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      40th Sister In Law Birthday Card Still Totally Fabulous - Default Title (B08L26PPBB)
      40th Sister In Law Birthday Card Still Totally Fabulous - Default Title (B08L26PPBB)
      40th Sister In Law Birthday Card Still Totally Fabulous
      £3.95
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      40th Sister In Law Blue Tits Birthday Card Gold Foil Milo's Gallery - Default Title (B0CV9RR737)
      40th Sister In Law Blue Tits Birthday Card Gold Foil Milo's Gallery - Default Title (B0CV9RR737)
      40th Sister In Law Blue Tits Birthday Card Gold Foil Milo's Gallery
      £5.95
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      40th Sister In Law Champagne Flutes Gold Foil Birthday Card Milo's Gallery - Default Title (B0CZ49ZMG1)
      40th Sister In Law Champagne Flutes Gold Foil Birthday Card Milo's Gallery - Default Title (B0CZ49ZMG1)
      40th Sister In Law Champagne Flutes Gold Foil Birthday Card Milo's Gallery
      £6.95
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      40th Sister In Law Contemporary Hearts Birthday Card Gold Foil Milo's Gallery - Default Title (B0CY9WMLMF)
      40th Sister In Law Contemporary Hearts Birthday Card Gold Foil Milo's Gallery - Default Title (B0CY9WMLMF)
      40th Sister In Law Contemporary Hearts Birthday Card Gold Foil Milo's Gallery
      £5.95
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      40th Sister In Law Funny Eye Sight Birthday Card Letters - Default Title (B09Q79BN32)
      40th Sister In Law Funny Eye Sight Birthday Card Letters - Default Title (B09Q79BN32)
      40th Sister In Law Funny Eye Sight Birthday Card Letters
      £3.95
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      40th Sister In Law Gold Foil Birthday Card Harvest Mice Milo's Gallery - Default Title (B0DG33R4WB)
      40th Sister In Law Gold Foil Birthday Card Harvest Mice Milo's Gallery - Default Title (B0DG33R4WB)
      40th Sister In Law Gold Foil Birthday Card Harvest Mice Milo's Gallery
      £6.95
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      40th Sister In Law High Heel And Perfume Birthday Card Gold Foil Milo's Gallery - Default Title (B0CX7MCNZM)
      40th Sister In Law High Heel And Perfume Birthday Card Gold Foil Milo's Gallery - Default Title (B0CX7MCNZM)
      40th Sister In Law High Heel And Perfume Birthday Card Gold Foil Milo's Gallery
      £5.95
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      40th Sister In Law La Petite Patisserie Birthday Card Milo's Gallery - Default Title (B0DFMYWPDQ)
      40th Sister In Law La Petite Patisserie Birthday Card Milo's Gallery - Default Title (B0DFMYWPDQ)
      40th Sister In Law La Petite Patisserie Birthday Card Milo's Gallery
      £3.95
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      40th Sister In Law Pink Cocktail And Butterflies Birthday Card Gold Foil Milo's Gallery - Default Title (B0CX21LNTL)
      40th Sister In Law Pink Cocktail And Butterflies Birthday Card Gold Foil Milo's Gallery - Default Title (B0CX21LNTL)
      40th Sister In Law Pink Cocktail And Butterflies Birthday Card Gold Foil Milo's Gallery
      £5.95
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      40th Sister In Law Walking Birthday Card Milo's Gallery - Default Title (B0CR1VJJWT)
      40th Sister In Law Walking Birthday Card Milo's Gallery - Default Title (B0CR1VJJWT)
      40th Sister In Law Walking Birthday Card Milo's Gallery
      £3.95
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      40th Sister-in-Law Birthday Card Dancing Dogs Milo's Gallery
      £3.95
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      Large Sister In Law 40th Birthday Card Still Totally Fabulous - Default Title (B0BBNKJRVW)
      Large Sister In Law 40th Birthday Card Still Totally Fabulous - Default Title (B0BBNKJRVW)
      Large 40th Sister In Law Birthday Card Still Totally Fabulous
      £8.95