Beyonc Knowles' younger sister Solange is already giving her pregnant sibling parenting advice.

The Crazy In Love singer is expecting her first child early next year with husband Jay-Z.

But Solange, 25, is already mother to seven-year-old son Julez and says that she knows Beyonc will be a great parent as she is a fantastic with her little boy.

"My sister is a phenomenal aunt, so I'm ready to be the same in her life," Solange told Us Weekly.

"I don't need any advice on how to be a great aunt. Because she has been a phenomenal aunt to my son, so she's set the tone as an aunt. I've set the tone as a mom, so we're learning from each other."

When asked who will be the better aunt, Solange says because Beyonc spoils her son, Julez would probably say she is.

"Well I'm sure my son would say Beyonce is the better aunt because I'm a mom first," she said. "I do realise that popcorn at 9.00 at night probably would make me the better aunt in his eyes."

Solange added that she is looking forward to spoiling her future niece and is "excited to have a little payback".