Last night (24 July), Lauren took to Instagram and revealed a new look to fans after having her long hair bleached an even lighter shade of blonde.
In the snap, the US reality star can be seen peeking through her platinum locks, which are now streaked with almost white highlights.
For a second there, we almost mistook Lauren for her former BFF and Hills co-star Heidi Montag!
Commenting on the selfie, Lauren said: "Things are getting real blonde around here..."
Last October, Lauren got engaged to her long-term boyfriend William Tell and the couple are thought to be planning an autumn wedding.
Is Lauren trying out a new look ahead of her big day?
This isn't the first time Lauren has switched up her hair colour. During her time on The Hills, she experimented with darker shades and then, in April this year, Lauren opted for a pastel purple hue.