I believe this is the "yellow variant" of the Cabbage White Butterfly Anne ... I am pretty sure but not 100% positive ... only the photographer can make that final judgment ... excellent pale yellow colour and superb details ... plus if this has two black patches on the top-wing .. it is a Female ... the Male has only one ...

www.wpclipart.com/animals/bugs/butterfly/butterfly_photos/butterfly_photos_2/Cabbage_butterfly.jpg

Thanks so much, as always, Art, for your help with the ID of this butterfly! Especially appreciated at the moment as I'm feeling really sick from antibiotics, and early tomorrow morning, I'm away for four days, so won't be able to post any shots for two days, possibly three. Talk about bad timing to be sick! Still got to pack, too!