Simple A Line Deep V Neck Royal Blue Long Prom Dress with Split PSK466 US8 Royal Blue Critics argue that at only 13, Blue Ivy is beginning to look ' much older than her mum ' #grammies2025 The internet is LOVING Blue Ivy's Angel Ball moment. The 13 year old absolutely stunned in a baby pink feathered gown, and social media can't stop talking about it. From her elegant style Is it acceptable for a 12 year old to wear an off the shoulder ball gown on a very special occasion, or is it too grown up? Blue Ivy Carter looked beautiful in hers.