They became friends 17 years ago in 2002 when they were noticed on Popstars: The Rivals and propelled to fame in girlband Girls Aloud.
And Kimberley Walsh, 37, and Nicola Roberts, 33, both dazzled as they attended the Costa Smerelda Invitational Gala Dinner in Sardinia, Italy on Saturday.
The mother-of-two glowed in a sunshine yellow two-piece, while the chic redhead rocked a chocolate-coloured chiffon dress.
Stunning: Kimberley Walsh, 37, and Nicola Roberts, 33, both dazzled as they attended the Costa Smerelda Invitational Gala Dinner in Sardinia, Italy on Saturday
Kimberley looked summer ready in the bright yellow ensemble, which featured a bardot crop-top that flaunted her toned abs and a matching floor-length skirt with a thigh-high split.
Keeping her blonde bob in a sleek middle parting style, the singer opted for a glowing makeup look with glossy lips and black mascara.
She accessorised her radiant outfit with an embellished gold clutch bag and gold metallic stiletto heels.
Her former bandmate Nicola wore a brown chiffon dress with a low neckline and a subtle a-symmetric finish.
Glamorous: The mother-of-two glowed in a sunshine yellow two-piece, while the chic redhead rocked a chocolate-coloured chiffon dress
Nicola wore her fiery long locks in a loose, straight style and completed her outfit with a double-chained gemstone necklace and open-toed black sandals.
The pop princesses and former bandmates both cut glamorous figures for the second night of the Costa Smerelda Invitational Gala.
Another famous face at the event was TV star Denise Van Outen who put on a busty display in an emerald green, satin dress with a thigh-high split.
The pop princesses and former bandmates put on glamorous displays for the second night of the Costa Smerelda Invitational Gala
Enviable abs: Kimberley was summer ready in the yellow ensemble, which featured a bardot crop-top that flaunted her toned abs and a matching floor-length skirt with a thigh-high split
Meanwhile, TV presenter Jenni Falconer looked in high spirits at the bash where she wore a bright orange dress with lace detailing.
The official website describes the fifth Costa Smeralda Invitational as: 'A unique two-day celebration of La Dolce Vita, sport and style for charity.'
The exclusive event is set against a backdrop of one of the world's most beautiful landscapes in Sardinia. At the bash: 'celebrities meet business leaders and VIP guests, while enjoying five-star sport, entertainment and hospitality.'
Stylish: Another famous face at the event was TV star Denise Van Outen who put on a busty display in an emerald green, satin dress with a thigh-high split
All smiles: (L - R) Kimberley Walsh, Nicola Roberts, Denise Van Outen and Jenni
