Who indeed. Or any day, many would argue.
The 48-year-old CNN personality guest co-hosted the daytime talk show, marking his 40th such stint and the first time he has joined Ripa, 45, as her co-host since Michael Strahan left the position last month after more than three years.
Cooper joins several other popular TV personalities who have in recent weeks guest co-hosted LIVE, whose title has been changed over the years amid casting shakeups, and he is widely seen as a possible contender to replace Strahan.
Fans have often noted the chemistry Ripa and Cooper share and Wednesday was no exception. They even got frisky on and off-screen.