To recreate the look, try the Burberry Complete Eye Palette in Rose No. 10. Or play with shades of barely-there pink like Jane Eye Shadow in Verbena Matte and Chanel Illusion D'Ombre Long Wear Luminous Eyeshadow in 93 Impulsion.
I would totally turn my chair around for "The Voice" coach Shakira's soft lavender shadow. Instead of taking over her lid, the color is concentrated around her lashes -- both upper and lower -- which makes it much more refined.
Try sheer single shades like Urban Decay in Grifter or L'Oréal Studio Secrets Professional Eye Shadow in Violet Petal. A purple palette like Clinique All About Shadow Quad in Going Steady lets you create a more customized look.