On the Steve Allen show who was made to wear a white tie and tails while singing you nothing but hound dog named Sherlock?

The guest who was made to wear a white tie and tails while singing "You Ain't Nothin' But a Hound Dog" on the Steve Allen show was Elvis Presley.

This happened on July 1, 1956. Allen, a comedian and musician, thought Elvis's performance was too suggestive and wanted to "tone it down." He made Elvis wear a white tie and tails, but Elvis still managed to inject his signature energy into the performance. This caused a stir with viewers and the media, further solidifying Elvis's controversial image.