Simple: her edited life. Look at what she displays, what she wants people to see, whatever bag she's toting around. With her, everything is status symbol galore.
Her appearance, her demeanour, her behaviour, everything MUST make you feel envious of her, even though she's nothing to be envious of.
From an intellectual perspective, she's puddle deep, from a beauteous point of view, she's meh at best, from a values' vantage point, she's obnoxious.
But then, you see LONDON, TRAVEL, MONEY, HOUSING, MAKEUP, HAIR, JEWELLERY, FAMILY, FAMOUS FRIENDS, DECORATION, HERMES, CHANEL et al, and you might be tempted to think 'Ha! Her life is nice! I want it too!'
She's an ugly-ish privileged girl that conveys atteignable luxury in a marketing sense. Everyone could possibly be in her shoes, all it takes is a bit of means. That's her USP. When in fact, she's a tacky glorified sales person, that's all.
Which can be painful when you know who her father is, and how poised her mother looks. Intellect and looks, she has neither.
