According to Dana from Clevver TV, technical effects were employed to make Foy look smaller in the film. Also, Rachel St. Gelais and Eliza Faria were cast as Foy's body doubles. CGI was used to put Foy's heads on their bodies, to display the dramatic growth spurts of Renesmee.
Foy started modeling in 2005, working for Garnet Hill, Ralph Lauren, and Guess Kids. She has also modeled for companies such as Payless, JCrew, Jill Stuart New York, The Walt Disney Company, Mattel, GAP Kids, and Monnalisa.
Foy has appeared in many commercials as well, including Burger King, Kohl's, BlackBerry, Comcast, and Pantene. She guest starred on the television shows Strong Medicine, Charmed, 'Til Death, FlashForward and Hawaii 5-0. Foy plays the role of Renesmee Cullen in Breaking Dawn.
|2004||Strong Medicine||Little Girl||Television debut|
|Good Day LA||Model||Lisa's LA Children Place Fashion|
|2009||'Til' Death||Little Girl||Television series (Episode "No Complaints")|
|2010||FlashForward||Katie Erskine||Television series (Episode "Blowback")|
|Hawaii Five-0||Lily Wilson||Television series (Episode "Ho'apono")|
|2011||The Twilight Saga: Breaking Dawn - Part 1||Renesmee Cullen||Released November 18, 2011|
|2012||The Twilight Saga: Breaking Dawn - Part 2||Renesmee Cullen||Released November 16, 2012|
|The Haunting Hour||Georgina Lomin/Natalie||Television series (Episodes "The Return of Lilly D" & "Red Eye)|
|Wish You Well||Lou Cardinal|
|The Conjuring||Cindy Perron|
|Ernest & Celestine||Celestine||Voice|
|The Boxcar Children||Violet||TV movie|
|Black Eyed Dog||Daisy|
|The Cookie Mobster||Sally||TV movie|
|2015||The Little Prince||Little Girl||Voice|
|2018||The Nutcracker and the Four Realms||Clara|