Some of us can’t get through the day, let alone a year, without switching up our hair and makeup routine. But for others, certain styles or products are just too good to let go of. Celebrities are often a source of inspiration for our outward appearance, a reality that carries both positive and negative side effects.
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And although we live for a bold transformation, like Kate Hudson’s big chop or Solange’s platinum dye job, we’re just as inspired by the famous beauties who stand (or stood) firm in their signature styles or simply embrace their most famous features, despite the trend cycle that never seems to end. Ahead, we celebrate some of our favorites, both past and present. We have a feeling you’ll recognize plenty, if not all, of them, from Marilyn Monroe’s blonde bob to Adele’s cat-eye to Jennifer Lopez’s derriere.

Before her untimely death in 2001, the R&B songtress rarely deviated from her straightened hair, parted to the side.

We have the singer's trusty makeup artist, Michael Ashton, to thank for giving us peak cat-eye inspo every time she hits a red carpet.

The model and "Gurl's Talk" founder is known for coloring her signature buzz cut whenever the occasion calls.

For the first couple years of her singing career, the singer and TV host consistently wore her hair in cornrows with beads at the ends.

The model and Slutwalk founder loves experimenting with wigs, but her signature look will always be this blonde buzz cut.

The late singer's beehive and thick cat-eye became a part of her look, both on and off the stage.

The actress and philanthropist's full lips certainly contribute to her sex symbol status.

Even with blonde and gray hair, the singer has continued to rock a long, luscious high ponytail.

Hard to imagine the singer without honey-blonde locks, regardless of the cut or style.

Back in 1979, the actress' cornrows were cemented as one of cinema's most memorable looks.

Throughout the '90s and part of the new millennium, the singer and actress became known for her microbraids.

Her tousled blonde hair, cat-eye makeup, and pouty lips were among the must-have looks throughout the '60s and '70s.

Rather than have it removed, the model embraced the mole just above her lip, ultimately leading to her supermodel status.

This mother and daughter duo rock larger-than-life manes, whether they're together or separate.

The burlesque performer is fiercely devoted to rocking a red lip almost daily.

You'll be hard-pressed to see this top runway model without pink hair.

The legendary performer has always rocked short hair and a bold lip, both on and off the stage.

This certified California girl is never without red lipstick or platinum hair.

Although she's experimenting with longer styles now, the Oscar winner has spent most of her career in a pixie cut.

When she first hit the scene, the singer and actress consistently wore a pompadour hairstyle, along with a black-and-white suit.

Whose backside is more famous than this triple threat's?

Whenever she hits a red carpet, we're reminded of her uniquely colored eyes. The technical name of this is heterochromia, when the eyes vary in pigmentation.

Since winning her Oscar, back in 2014, the actress and her trusty stylist Vernon Francois, have collaborated on some of the most head-turning natural hairstyles in Tinseltown.

Besides that curvy figure and soft-spoken voice, Monroe's signature look isn't complete without the platinum bob.

Long before natural hair was seen as beautiful to the mainstream, this iconic performer and activist proudly rocked her coils and kinks at a time when most performers of color were wearing wigs on stage.

From 2007 to 2009, the singer's black hair signified her "Good Girl Gone Bad" phase.

Since leaving Hollywood to become a full-time activist and artist, McGowan's black buzz cut and bold lip have become part of her signature look.