The Daily Star reports that after competing for lead roles in a remake of ’60s classic ‘Valley Of The Dolls’, Christina Aguilera has struck a friendship with Australian actress turned singer Holly Valance. “Christina told Holly that she thought she had deliberately worn a raunchy outfit to show her up,” a source revealed of their initial meeting. “But Holly just laughed and took it on the chin. The next thing was Christina laughed too and they just hit it off. Christina was bowled over by Holly’s presence on camera.” The two have kept in touch and Aguilera is seeking advice on up-and-coming movie projects with the former ‘Neighbours’ star.