When I did girl!Four I just kind of tweaked all the elements of the outfit to make them more girly without changing too much, although most of it was stuff I was able to buy instead of make, except the scarf, so I don't know how helpful that is? I'm in a group that's doing girl versions of all 11 Doctors at Dragon*Con this year and I'm not sure what our Five is doing yet, but I think our Ten plans on making his brown suit but with a pencil skirt instead of pants. This site has breakdowns of all the Doctor costumes and might have some links to patterns if you poke around.
http://dw-cosplay.livejournal.com/
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Dragon*Con 2013
Sarah Jane Smith - Doctor Who
Mara Jade - Star Wars EU
Navi - Legend of Zelda
Delirium - Sandman
Lumpy Space Princess - Adventure Time
Girl!Captain Jack Harkness - Torchwood
Misty - Pokemon