Star Tracker: Demi Lovato, Bruno Mars, Jessica Alba, and more!

— Apparently, our December/January cover girl Demi Lovato can move like Jagger! The 19-year-old actress/singer performed Christina Aguilera’s hit song “Moves Like Jagger” this past weekend. Lovato felt under the weather, but still looked forward to performing in Texas, Just Jared reports. “Woke up so sick this morning but I WILL NOT let it stop me from putting on a killer show in my hometown tonight!!!” Lovato wrote on Twitter. “Come on Dallas TX!!!!” Check out a video of Lovato’s performance here.

Zoe Saldana has a big heart. According to AOL Latino, the part-Puerto Rican, part-Dominican actress helped feed food to the homeless last Wednesday. The 33-year-old Saldana joined reality TV star Kim Kardashian and actress Jennifer Love Hewitt for the Los Angeles Mission, a nonprofit organization that serves the homeless in the streets of downtown L.A.

— Exciting news for television! ABC’s Work It starring Boricua actor Amaury Nolasco premieres on Tuesday, Jan. 3 at 8:30 p.m. GCB, which stars part-Spanish and Mexican actress Marisol Nichols, premieres on Sunday, March 4 at 10 p.m.

Jessica Alba’s weekend was family-filled. The 30-year-old Mexican American actress went to Disneyland Park with her hubby Cash Warren and their two daughters – Honor and baby Haven. According to Just Jared, Alba and Warren were joined by Alba’s parents at the theme park.

— We love Bruno Mars. The 26-year-old part-Puerto Rican singer performed his hit song “It Will Rain” last week on The X Factor. His performance, which featured a red broken heart behind the singer, was heartfelt – but could we expect anything less from the cutie crooner? “It Will Rain” is included in the Twilight: Breaking Dawn soundtrack and earlier this month, Mars premiered the music video for the song. Check out Mars’ performance here!