Beyonce has shot down rumours her marriage to Jay Z is in trouble by posting an idyllic family holiday snap of him.

The Crazy In Love singer shared a photograph with fans on her Instagram account of husband Jay, 44, walking along a beautiful beach, holding their two-year-old daughter Blue Ivy in his arms.

Beyonce captioned the picture: "My favourite hue is JayZ Blue".

The couple are currently in the middle of their joint On The Run tour.

Earlier this year a video tape was leaked of Beyonce's younger sister Solange Knowles lashing out at Jay Z in a lift at a New York hotel while Beyonce looked on, in the early hours of the morning after the Met Ball.

Since then they have been dogged by rumours that their relationship is on the rocks, but have both refused to comment and continue to tour together.

The most recent rumour alleged that Beyonce was looking for an apartment of her own in New York.

Beyonce and Jay Z - whose real name is Shawn Carter - are believed to have begun dating in 2002 when they collaborated on the track '03 Bonnie & Clyde.

They were married in 2008, although they refused to confirm it publicly until last year when Beyonce used the name Mrs Carter for her solo tour.