The two ended up crossing paths behind the main stage at the Glastonbury music festival. An onlooker said of the incident:
"They refused to talk to one another, despite having practically the same group of friends who were all there. It was really strained - you could cut the atmosphere with a knife.
Kate seemed to be doing her best not to glance at Sienna and tried to act all cool. Both looked embarrassed that they had bumped into each other at all."
Unfortunately that's all that happened — no cat fights, no hair pulling, no nothing!
For the rest of the weekend, Sienna made a conscious effort to avoid seeing Cokate again by bailing on a star-studded PlayStation party.
Who knew little Cokate could be so intimidating???
[Image via WENN.]