Gracie Elliot Teefey
|Status with Selena||
Maternal younger half-sister
Gracie Elliot Teefey (born June 12, 2013) is Mandy & Brian's daughter, Scarlett's little sister and Selena's maternal younger half-sister. It was first confirmed on Mother's Day 2013 that Mandy was pregnant when Selena tweeted a picture of her mother with her baby bump on Twitter. On June 14, 2013 Selena confirmed that Gracie was born,  in the same tweet confirming Gracie's full name and birth date.
- Before Gracie was born, Selena was going to be a big sister in 2011 to a sister named Scarlett but her mom miscarried around Christmas.
- The rumor of Gracie's birth day started on June 11.
- The first person to confirm the birth of Selena's sister was Demi Lovato via Twitter.
- On July 9, 2013 Selena tweeted that she bought Adidas shoes for Gracie.
- On July 18, 2013, Selena answered in a Q&A that being an older sister is "the best feeling in the world."
- On August 1, 2013, Selena released the first picture of Gracie with her and her backup dancers for the Stars Dance Tour.
- According to one of Selena's friends, Selena loves taking pictures of herself and Gracie.
- On August 10, 2013, Selena spent the day with Gracie and their mom at the Topanga Mall in Canoga Park, California.
- On December 25, 2013, Selena posted a photo of her and Gracie cooking Christmas dinner.