The 'Air Balloon' hitmaker recently defended Gaga after she was criticised for her latest album ARTPOP being a relative flop, insisting she deserves credit for the risks she has taken, reported Daily Mirror.
After catching Allen's kind comments, the face of Versace's spring/summer 2014 range said "lovely" Lily is "very sweet".
"That's very sweet, I've always been a very big fan of hers and I appreciate her standing up for artists and for me in particular, that's really admirable for her to do that.