KOST 103.5 Flips The Holiday Switch with KTLA Holiday Kick-Off Concert with Rachel Platten at Morongo Casino Resort & SpaEllen K Flips The Holiday Switch With A Mystery Celebrity Guest A Legend-ary Start to the Holiday Season on KOST 103.5 with John Legend🎄🎶Barry Manilow Reveals Shocking Jacuzzi Capacity In Elvis' Vegas Suite 🎲Snow Much Fun With Star of Netflix's "Hot Frosty" Lacey Chabert ❄️🔥☃️When Did Elvira Know She Was The Mistress of the Dark? 🖤🦇🖤 The Countdown to Christmas: When Will KOST 103.5 Flip the Switch?Mariah Carey’s Christmas Time at the Hollywood Bowl on Friday, November 8th