Beyonce's Younger Sister Fought Jay Z Because He Failed In His Promise To Make Her A Superstar!

Solange Knowles allegedly flipped out at Jay Z because he has repeatedly failed to make her a megastar.

Bey’s 27-year-old sister was caught on CCTV attacking her music mogul brother-in-law in a lift as the trio headed home from a Met Gala after-party in New York City last week. And Solange’s outburst has been on the cards for a while, a family friend has claimed.

‘Solange is so angry because Jay Z promised to give her more help with her career and when she brought it up again the night of the gala, he told her he just didn’t have the time to work with her in the studio,’ the insider explained. ‘He hasn’t kept his promise to help her. Jay keeps telling her to give him some time and he will sit down and write with her and then get her into the studio but he hasn’t done it yet.’

The source added: ‘Solange’s third album is coming out soon but there is no buzz about it, which is a bad sign within the industry. ‘Solange wants a major career like her sister and she’s tired of living in her shadow. She’s jealous.

‘Jay Z promised he would help take her to the next level but he never found the time to keep his word,’ the friend told Mail Online. A metro.co.uk extract.