Star Tracker: Adamari López, Kate del Castillo, Mariah Carey, and more!

Boricua actress Adamari López is the most beautiful woman of the year! Or so says Para Todos magazine, Latin Gossip reports. It is the first time that Para Todos selected only one person for the title. The 40-year-old López is currently competing on Mira Quién Baila.

— Mexican actress Kate del Castillo is set to guest star in CBS’ CSI Miami this upcoming Sunday, according to Media Market Journal. According to the website, the 38-year-old will star in the episode titled Killer Regrets.

— Some of our biggest stars came together recently to benefit PADRES Contra El Cáncer (PADRES) – a Latino-based organization that helps promote understanding of childhood cancer, according to Tr3s. 36-year-old Mexican American actress Eva Longoria invited other stars like George Lopez, Edward James Olmos and Josie Loren to the event.

Justin Bieber is extremely excited to work with Mariah Carey on his upcoming Under the Mistletoe album. In an MTV interview, the 17-year-old Canadian crooner (and Selena Gomez’s sweetie) spoke about collaborating with the part-Venezuelan songstress on a new version of her holiday classic “All I Want for Christmas Is You. “Mariah Carey is doing it with me!” Bieber told the reporter. “It's incredible. So excited.”

Demi Lovato is walking down the aisle! No, the 19-year-old singer/actress is not getting married, but she will reportedly be a bridesmaid in a wedding next month. According to Celebuzz, the part-Mexican teen star got fitted recently for Tiffany Thornton’s wedding.