The 25-year-old, who has son Julez, seven, said that she plans to take a leaf out of her big sister's book when it comes to performing her aunt duties.
'My sister is a phenomenal aunt, so I'm ready to be the same in her life,' she told Us Weekly.
'I don't need any advice 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 mum, so we're learning from each other.'
But who will be the best? 'Well, I'm sure my son would say she's the better aunt because I'm a mum first,' she said.
'I do realise that popcorn at nine at night probably would make me the better aunt in his eyes.'
'[I’m] excited to have a little payback,' she laughed.