Sophia Loren pioneered the 'unexpected red theory' in her '80s living room 38 years before it went viral – her classic trick is utterly timeless

If you want to elevate a space, all you need is something red.

So goes the 'unexpected red theory,' popularized by the interior designer Taylor Simon on TikTok. The theory gained widespread attention in early 2024. It advocates for incorporating a pop of red where it is seemingly out of place in your interiors, whether through a cushion, lamp, or rug. It was quickly followed by spin-off theories, such as 'unexpected blue' and 'unexpected yellow.'

However, the origins of the popular color trend go back much further; designers and chic people alike have always relied on the power of red to brighten and embolden a space. For evidence, look no further than Sophia Loren's living room in 1986.

Shop the unexpected red edit

An archival image shows the actress relaxing in her living room, complete with marble columns and an ivory sofa. Her choice to decorate with red draws the eye in and creates an intriguing combination.

The room features a red rug, a red armchair, and red lampshades. Covering the entire room in this color might be overwhelming, but the pops off just the right amount of visual interest.

As evidenced by the TikTok theory, though this photo was taken over 38 years ago, its playful feeling is echoed in today's interior design trends.

Carly Greening, interior design expert at The Floor Room, explains: 'From irregular-shaped mirrors to funky candlesticks, decorating schemes are becoming more playful with punchy palettes, scale, and joyful patterns. TikTok's 'unexpected red' theory is a reflection of this as homeowners explore new and innovative ways of adding color and character to their space.'

If you hope to create the same timeless aesthetic in your home, following Sophia's lead by integrating a stylish living room rug is a great place to start.

Carly advises: 'As the foundation of any room, flooring is the perfect starting point to add a playful touch to an interior scheme. Choose a patterned carpet with a hint of red or a neutral-toned runner with a crimson border to instantly transform your space.'

Often, the latest trend is something completely new, but a reiteration of an older idea. Chances are, in 20 years, the unexpected red theory will be rebranded. Those with their eyes to the timeless will recognize that it always has been, and always will be, a great look.