Ms Holmes is a senior career officer with the Department of Foreign Affairs and Trade. Prior to her appointment as Ambassador to Argentina in November 2011 (with accreditation to Paraguay and Uruguay), she was Assistant Secretary, Legal Counsel Branch, a position she held since April 2010. Ms Holmes has served previously in Geneva WTO (Counsellor 2006-2009), Papua New Guinea (First Secretary 1998-2000) and Vanuatu (Third, later Second, Secretary 1994-1996).
Ms Holmes holds a Bachelor of Science with a Bachelor of Law degree from Macquarie University; a Graduate Diploma in Legal Studies from the University of Technology, Sydney; a Masters of Arts in Foreign Affairs and Trade and a Masters of Laws in Environmental Law from the Australian National University. Ms Holmes was admitted to the Bar of NSW and ACT in 1992. Ms Holmes speaks Spanish. She has a partner and three children.