The 'Party Monster' singer allegedly purchased a number of expensive fur coats from the Helen Yarmak boutique in Moscow last week.
Amongst the garments said to have been purchased by GaGa were a $210,000 (£129,187) Russian sable coat and a $19,600 (£12,057) silver fox fur.
PETA activists have now attacked GaGa in a statement released to GossipCop, saying: "Out of place, out of time, and possibly out of her mind: While the country focuses on rejecting violence and we are deep into the season of peace, giving, and kindness, Gaga is busy decking herself out in a coat made of at least 30 slaughtered animals' skins."
This is not the first time that GaGa has been criticised by the animal rights organisation.
In August, the performer was slammed by PETA for wearing fur after claiming to hate the practices of the fur trade.
Watch Lady GaGa's video for 'The Edge of Glory' below: