Currently I'm collecting her Vivi Photoshoots. I don't know how many she has done but here's a list about which I have and which I am missing. Note that this list is far from complete. Also feel free to upload higher quality scans from the medium quality ones that I have.
Also I hope this is the correct section. If not I am honestly sorry.
The bold ones are the ones which I have in full scans. Hope someone can help. Oh and I'd be happy to upload any scans too
January
2001
2005
2006
February
2002 - Medium Quality
2003
2004 - Medium Quality
March
2005
April
N/A
May
2001
2003
June
2002
July
N/A
August
2003
2004 - Medium Quality
2005
September
2004 - Medium Quality
October
2002
November
N/A
December
2000
2001