Cassandra spoke to an American gossip magazine, telling them ‘I support him.’
Unlike her step-siblings, the 33-year-old blonde has chosen to stay out of the spotlight, choosing to live her life away from the Kardashian cameras.
She continued: ‘It's his life, and whatever he wants to do, he wants to do.’
64-year-old Bruce has undergone a number of cosmetic procedures in the past, but recently underwent a laryngeal shave, which involved reducing the appearance of his Adam’s apple.
Cassandra told People magazine that she felt Bruce didn’t need to go down the surgery route, saying: ‘He's always been a handsome guy, and he never needed to do anything.’
Check out the amazing changing faces of Bruce and Kris Jenner.
Though she continued: ‘But you know, clearly he feels differently. And nobody knows how it is to be in his skin. If that's what he chooses to do, then I support him.’
Bruce has been looking more groomed lately, enjoying trips to beauty spas to receive manicures and pedicures.
His new look comes following his split from wife Kris Jenner last year. The split has seen the Olympian gravitate towards his children from his previous 2 marriages.
Cassandra revealed: ‘He's really embraced his old family and friends that he hasn't seen for years.’
Bruce even spent some of the festive season with his limelight shy daughter.
‘My dad came for Christmas with presents for the kids. He's an involved grandpa.’