From the fbi.gov website (slightly reformatted for easier reading):
Aliases: Sidne Buchanan, Sidne Nichole Buchanan, Sidnenichole Buchanan Date(s) of Birth Used: March 5, 1992 Hair: Black Eyes: Brown Height: 5'1" Weight: 135 pounds Sex: Female Race: Black
The FBI is offering a reward of up to $10,000 for information leading to the recovery of Sidne-Nichole Buchanan.
Buchanan was last seen wearing a purple tank top dress, a blue denim jacket, and clear wedge shoes.
Sidne-Nichole Buchanan was last seen on July 27, 2019, at a concert in Tinley Park, Illinois. She was reported missing on July 29, 2019, and has not been seen or heard from since. It is believed that Buchanan could be in danger.
Moving our thread to the Missing on TV section since In Pursuit with John Walsh posted about Sidne-Nichole's disappearance on their Facebook page yesterday (see the show's August 3rd, 2019 status updates).