Beyonce sister cuddles up to 51 year old boyfriend Alan Ferguson

Solange Knowles celebrated her 28th birthday on Tuesday with her boyfriend of five years. 

And if a new report from MediaTakeOut is to be believed, it was a double celebration as the publication claims 51-year-old video producer Alan Ferguson proposed to her on Monday. 

While Solange has not yet commented on the report, she did take to Instagram to share a sweet snap of them cuddling in the water on a tropical beach while she grinned delightedly at the camera. 

MailOnline has contacted Solange's representatives for comment.

And while she may have been simply referring to her birthday celebrations, there was no doubt Solange was in a great mood. 

She wrote: 'Today couldn't have been more perfect. I couldn't have smiled harder. Thank you for all of your lovely and wonderful wishes. They warmed my heart and I simply feel grateful for all of the love.'

If Solange is indeed engaged this will be the second marriage for Beyonce’s little sister.