Source: A USA Today's USAWeekend.com article (here) that quotes Hoda's size as 9.5.
  
For Hoda's height, see celebheights.com.

Source: On this Xanga.com website (which claims is done by Mila herself), her size is listed as "7 1/2 or an 8".
  
For Mila's height, see celebheights.com.

Source: A pair of size 9.5 Calvin Klein shoes worn by Cleo in the movie "Dreamgirls".
  
For Cleo's height, see celebheights.com.

 

Source:  In Kim's eBay store, there are are large number of her shoes up for auction – the majority of them are size 7.
 
Alternate Source: After this post at gossiplist.com revealed Kim's eBay name ("*styleworld*" and "kimsaprincess"), this post over at celebitchy.com found a pair of size 9.5 Gucci loafers Kim had sold. They also found a pair of size 39 (US 9) Christian Louboutin espadrilles Kim purchased and can even be seen wearing in a post on celebitchy here. I'll stick with size 9 for now even though it sounds like she's anywhere from a 9 to 9.5.
 
Alternate source: feetbytheinch.com got me started on this whole search with their reference to Kim's size as a 9-9.5.
 
For Kim's height (5'3"), see celebheights.com.

Kim in shoes

Kim in boots

Kim's feet

Source: An "In Their Shoes" auction for a pair of size 39 floral flats worn by Keira.
 
For Keira's height, see celebheights.com.

Size 39 floral flats worn by Keira

Thanks to breastcancercare.org for the info and pic!

Source: An "In Their Shoes" auction for a pair of size 41 (US 10) Wild Rose shoes worn by Jemma.

For Jemma's height, see celebheights.com.

Size 41 (US 10) Wild Rose shoes worn by Jemma.

Thanks to breastcancercare.org for the info and pic!

Source:  Alternate source: Two "Clothes Off Our Back" auctions. The first was for a pair of size 40 (US 9.5) Christian Louboutin shoes worn by Jane on the last season of "Malcolm In The Middle". The second auction was for a pair of size 39.5 Domenico Vacca shoes worn by Jane to the 9th Annual Costume Designer Guild Awards.
 

For Jane's height, see celebheights.com.

Size 40 (US 9.5) Christian Louboutin shoes worn by Jane on the last season of "Malcolm In The Middle"

Thanks to clothesoffourback.org for the info and pic!
 

Size 39.5 Domenico Vacca shoes worn by Jane to the 9th Annual Costume Designer Guild Awards

Thanks to clothesoffourback.org for the info and pic!

Source: alicia-keys.net lists her size as 6.5 in their FAQ.
 
Alternate source: alicia-keys.net lists her size as 6.5 intheir FAQ.
  
For Alicia's height, see celebheights.com.

Source: An auction for a pair of boots worn by Beyonce in the movie "Goldmember" (see below). The seller confirmed the size of the boots in the auction was 38 (US 8). Also, another auction for a pair of size 8 shoes worn by Beyonce in the movie "Dreamgirls".
 

For Beyonce's height, see celebheights.com.

Beyonce in shoes and boots

Size 38 (US 8 ) boots worn by Beyonce in "Goldmember"

Thanks to eBay seller hasseline1svw for the pics and info!

Size 8 shoes worn by Beyonce in the movie "Dreamgirls"

Thanks to eBay seller empty_the_attic for the pics and info!

Source: hitwgang.com

For Karolina's height, see celebheights.com.