The 'Come & Get It' singer uploaded a photo to Instagram on Christmas Eve showing herself holding little Gracie as she busied about the kitchen cooking up a storm.
She added the caption: "Gracie helping me cook christmas dinner."
Selena, 21, became a big sister in June when her mum Mandy and stepdad Brian Teefey became parents to daughter Gracie. She confirmed the news via Facebook, writing: "Momma, Brian, and me are all so grateful for all your well wishes. My lil sissy Gracie Elliot Teefey was born on June 12. Luv you all so much. XOXO."
The starlet's quiet Christmas at home came after she announced she'd cancelled an upcoming tour of Australia in order to focus on her wellbeing.
"My fans are so important to me and I would never want to disappoint them, but it has become clear to me and those close to me that after many years of putting my work first, I need to spend some time on myself in order to be the best person I can be," she said at the time.
"To my fans, I sincerely apologise and I hope you guys know how much each and every one of you mean to me."
Proving how much she loves her fans, the former Wizards of Waverley Place actress made sure to send them a special Christmas message, saying: "Merry Christmas!! I am beyond thankful for my family, my friends and YOU. Each of you have made me incredibly happy and I only want to continue to grow with you! #redmakesmefeellikechristmas #fansentmethisphoto #iloveyou #werk."
Watch Selena's 'Come & Get It' video below: