Why is it Called the Tribute Bag?

I'm not sure at all but a pair of thier shoes/pumps have the same name,I wondered if it was in honor of a former designer of YSL and so they have called these things Tribute as a 'tribute' to someone? Actually it would be very ineteresting to find out, bit like the Kelly bag was inspired by Grace Kelly, and Louis Vuitton Speedy cherry was inspired by Audrey Hepburn,I'll keep checking back to see, I'm sure some of the ladies on here would know and they all seem lovely,and very generous with any knowledge they have!