Reba McEntire couldn't be more excited to be officially joining as a season 24 coach!NBC announced on Monday that the country music legend will officially be stepping in for departing coach Blake Shelton for the next season of the long-running singing competition, set to premiere this fall.Reba will draw from her iconic career as she shares her expertise with hopeful up-and-comers, joining veteran coach John Legend and returning coaches Niall Horan and Gwen Stefani.The news comes after Reba served as the celebrity Mega Mentor for season 23, advising Blake Shelton and his fellow coaches -- Kelly Clarkson and newcomers Niall and Chance the Rapper -- and their team members ahead of the Knockout Rounds. ET's Cassie DiLaura spoke with Reba at live semifinals on Monday night, where the singer and actress shared why now was the «perfect» time for her to join the show — after turning it down when was first in development in 2011.«The first time I ever heard of I saw the tape from Holland's [version of the show],» she recalled. «They asked me to do it, and I turned it down.»«But I think timing is everything,» Reba added.