If you ask us, every woman should own a flat iron. Why? Well, first of all, the possibilities are endless (you can even curl your hair with it!). Secondly, there’s nothing we love more than a classic, sleek hairdo — perfect for a high-power meeting in the office or a sexy night out on the town. These celebs show us how any length or texture of hair can get some serious star power with the help of a straightener.

1. Young Beauty: Straight hair is super glamorous when it’s suuuuuper long. Selena obviously knows a thing or two about this. (via Seventeen)

2. Pony Chic: Now, that’s a pony you can rock on the red carpet (or whatever the everyday girl’s equivalent to a fancy night out is). We’d expect nothing less from Bey. (via Allure)

3. Bangs for the Win: What a bangin’ look! (See what we did there?) This long style paired with bangs is sweet, yet sophisticated and is a much enjoyed break from common long locks. (via D Haircut)

4. Mid-Length Must-Have Hair: Doesn’t Mila’s hair just look beautifully windblown? The subtle swept look adds tons of body and texture. (via Zimbio)

5. Shortie Style: A long bob, flat ironed to shiny perfection is one eye-catching hairdo we want to have! (via PopSugar)

6. Cute as a Button: Face-framing layers fall just below the chin for a soft, casual vibe within this straight, sleek silhouette. (via IMDB)

7. Sleek Sophistication: Nothing makes more of a statement than super sleek locks with a middle part. Kim K. cranks it up a notch with subtle low lights. (via PopSugar)

8. Blonde Basics: Kate shows us that layers aren’t always necessary with long hair. Here, her basic blonde style is sweet, simple and totally stunning. (via Beauty Editor)

9. All About the Part: Texture time! Mary Kate and Ashley’s lil sis sure knows how to create a dramatic down ‘do in no time. Just pull hair over shoulder for volume and voila! (via PopSugar)

10. Long Hair Don’t Care: Well trimmed bangs and long, lovely ombre strands give Jessica’s hair some serious wow factor. (via Elle)

11. Mind the Middle: Even above-the-shoulder hair could use a little flat iron love when in need of a posh style for a night out. (via Style Bistro)

12. Side of Sleek: Doesn’t Amanda’s hair just look like a river of blond beauty? Seriously, her strands just seem to flow somehow… they’re that straight! (via PopSugar)

13. Pull It Back: Emma shows us another sleek pony that veers on the side of dramatic, yet still seems so easy to pull off. (via BellaSugar)

14. Short and Simple: We love that Alicia’s look is both straight and blunt. It’s a total head turner. And don’t even get us started on that fabulous middle part. (via Hair Style News)

15. Sassy Hairdo: Jessica‘s long bob leans more causal with the use of a side part and highlights that add color and vibrancy to her hair. (via PopSugar)

16. Cute Lob: Forget straight and smooth bangs, Kerry adds some playfulness with her textured bangs that go perfectly with her straight ‘do. (via Vogue)

What style stands out to you? Tell us which picture you’re going to bring with you to your next hair appointment!