Coosje van Bruggen (June 6, 1942-January 10, 2009) was a Dutch-born American sculptor, art historian, and critic. She collaborated extensively with her husband, Claes Oldenburg.
Biography on Wikipedia: https://en.wikipedia.org/wiki/Coosje_van_Bruggen
Spoonbridge and Cherry by Coosje van Bruggen & Claes Oldenburg
1985-1988 / Aluminum, stainless steel, paint / 354″x618″x162″ / Walker Art Center, Minneapolis, MN
Coosje van Bruggen on Artnet: http://www.artnet.com/artists/coosje-van-bruggen/