Aishwarya Rai & the mystery of her white coat

Have you guys noticed, Aishwarya has been wearing this same white coat at so many recent events @ french open, @french open press meet, @south filmfare awards 2007, @longines press meet in mumbai , whats going on aishwarya ? the Bachchan's are known to be a superstitious lot having a family astrologer & all , perhaps it has got something to do with that or hasnt aishwarya still trasferred her clothes to the Bachchan bunglow , we can all but speculate, only aishwarya would know whats going on.