Alexis Ohanian celebrates Serena Williams as his favorite karaoke partner with cute photo.

Reddit Co-founder Alexis Ohanian took to his IG page to celebrate his wife, Serena Williams, as his favorite karaoke partner.

Sharing a cute photo of them performing together on stage, he wrote: 'Celebrating my favorite karaoke partner today, even though we're seperated by a thousand miles.

We may be legendary performers on stage, but it's everything else that makes me love you a little more each day.'