Blue Burmese Changing Colour???

my girl came from a siamese group but i asume there was a burmese adult, i think i rember her breeder saying the one she was keeping was a burmese. Any way she looked blue burmese when i got her but latley ive noticed she is getting lighter, ive never had this colour befor is this normal? or is she realy siamese?? I dont know if its related to her having a litter, and she is moulting at the moment so looks a bit patchy.

When i got her. she came out lighter in this photo due to the flash.


And today.