updated 01/16/2012 AT 11:00 AM ET
•originally published 01/16/2012 AT 12:45 PM ET
Perhaps it didn’t look right next to all her other bling?
The actress, 29, was sporting a load of Tiffany & Co. jewelry, including a stitches diamond ring in platinum and 18-karat yellow gold (designed by Jean Schlumberger, worth $25,000), as well as five diamond metro band rings set in 18-karat yellow gold (worth $1,900 each).
But her left ring finger was bare, with no sign of the custom-designed ring that Timberlake, 30, reportedly proposed with in Montana.