Prince William steps out solo for a charity benefit

Most moms know that morning sickness is in itself often a cruel joke.

It hits morning, noon and night and has no respect for times of day.

Prince William can relate.

His wife, you might have heard, is pregnant and was just released from the hospital after suffering acute and potentially dangerous morning sickness.

He hit the charity tennis Winter Whites Gala, held in aid of homeless charity Centrepoint, at the Royal Albert Hall in London. His wife Kate stayed home.

William was in good spirits. Former Centrepoint chairman Michael O'Higgins said: 'He said they shouldn't call it morning sickness as it's a day and all night sickness'" per the Daily Mail.