VIDEO : Lionel Richie, Mariah Carey joining forces for 2017 tour

Get ready to party all night long with Lionel Richie and Mariah Carey. The singers announced Monday they are joining forces for the All The Hits Tour, which kicks off in Baltimore on March 15, 2017. Tickets for the 35-date tour, starring Richie with Carey as a special guest, go on sale Saturday. Carey is only behind the Beatles for most No. 1 songs on Billboard's Hot 100 chart with 18. The tour will wrap in Fort Lauderdale, Florida, on May 27.