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Amber Heard showed up for her deposition Saturday in her divorce/domestic violence case against Johnny Depp ... but she never took the oath and never testified about a thing ... sources connected to Amber tell TMZ. We're told there was a videographer and court reporter present and Johnny's lawyers were at the conference room table, but Amber never even walked in the room the entire day. She was in a nearby office. Mind you ... Amber showed up at around 11:30 AM -- she was an hour and a half late -- and didn't leave until 9 PM. So, what happened inside the building? We're told both sides were talking settlement but no deal was struck. As for why Amber never entered the room, much less answered questions the entire day ... it's a mystery.

Mariah Carey is set to guest star on Fox’s hit musical drama “Empire” this season, the network announced Monday during its TCA Summer Press Tour panel. The music icon will appear on the Oct. 5 episode, in which she will play Kitty, a mega-superstar who comes to Empire to collaborate with Jamal Lyon (Jussie Smollett) on an explosive new song. When the duet encounters obstacles, Kitty helps Jamal dig deep to overcome personal difficulties and reach a musical breakthrough. “Empire” Season 3 premieres on Sept. 21. Previously announced guest stars this season include Taye Diggs, Sierra McClain, rapper French Montana and music mogul Birdman, who plays himself. Carey’s previous acting credits include “Glitter,” “Ally McBeal” and “You Don’t Mess with the Zohan,” in which she appeared as herself. More notably, the singer was previously cast by “Empire” co-creator Lee Daniels in films “Precious” and “Lee Daniels‘ The Butler.” Currently, Carey is about to begin the second half of