The 38-year-old, who plays Hilda Suarez on the ABC show, gave birth to Paloma Louise Lebenzon in June. She said that the infant is a celebrity in her own right when she visits the set.
She told People: "[Paloma's] like a little Ugly Betty mascot. Everybody is constantly popping into my room to pick her up or talk to her. She has this whole other family at [the show], and it's great."
Ortiz stated that her mother and co-star Marc Indelicato's (Justin Suarez) mum watch after the 3-month-old between takes. She also tends to the breastfeeding needs of her baby once the camera stops rolling, even if the film crew is present.
She added: "The team will be, like, 'Uh, Ana, do you need a break?' And I'll be like, 'What are you guys looking at?!'"
The fourth season of Ugly Betty premieres with a two-hour episode on Friday, October 9 on ABC.