Source: A RedShoeInitiative.org auction for a pair Marcia's size 6 Carlos shoes.
  
For Marcia's height, see celebheights.com.

Source: An eBay auction for a pair of size 8.5 Skechers sneakers worn by Wendi in the movie "Over Her Dead Body".
  
For Wendi's height, see celebheights.com.

Source: An eBay auction for a pair of size 7 Via Spiga boots worn by Margaret in the movie "One Missed Call".
  
For Margaret's height, see celebheights.com.

Source: A pair of size 6.5 "Simple" sneakers worn by Flora in the movie "Margot at the Wedding".
  
For Flora's height, see celebheights.com.

(Ciara Princess Harris)

Source: Pure speculation. Because of a mislabeled eBay auction, I originally had Ciara listed as a size 8. A couple of posts on the Internet speculate that she's a size 10 and other posts say size 12. I usually don't like to post guesses for shoe sizes but since Ciara's entry was already up on the site, I thought I'd leave it here. I'll stick with a 10 until we can find more reliable information. 
 
For Ciara's height, see celebheights.com.

 

Source: An eBay auction from Alana herself for a pair of size 6.5 shoes she wore on the red carpet for the premiere of the movie “The Pulse”.

For Name’s height, see celebheights.com.

Source: A newspaper interview from Sept. 1, 2006, (here) mentions her size as 5.
 
Alternate source: Three Elisha Cuthbert fan sites list her as a size 6. Site 1 – Site 2 – Site 3.
 
For Elisha's height, see celebheights.com.

Elisha in boots

Elisha's feet

Kim Cattrall's shoe size is 9.5

Source: Two eBay auctions for shoes worn by Kim. The first is for pair of size 40 (US 9.5) Chanel shoes worn by Kim on the set of the TV series "Sex and the City". The second auction is for a pair of size 40 (US 9.5) Caovilla shoes also worn by Kim on the set of "Sex and the City".
 
Alternate source: A third eBay auction for a pair of size 39 (US 9) Oscar de la Renta shoes worn by Kim on the set of "Sex and the City".
 
For Kim's height, see celebheights.com.

Size 40 (US 9.5) Chanel shoes worn by Kim on the set of the TV series "Sex and the City".

Thanks to eBay seller bbronz for the info and pics!

Size 40 (US 9.5) Caovilla shoes also worn by Kim on the set of "Sex and the City".

Thanks to eBay seller bbronz for the info and pics!

Size 39 (US 9) Oscar de la Renta shoes worn by Kim on the set of "Sex and the City".

Thanks to eBay seller bbronz for the info and pics!

Source: An eBay auction for a pair of size 5.5 Via Spiga shoes worn by Kristin.

For Kristin's height, see celebheights.com.

Source: An eBay auction for a pair of Tara's size 38 Vero Cuoio boots. In the auction, Tara herself writes, "I wear a 7-71/2 in US sizes just fyi".

For Tara's height, see celebheights.com.