The more the better when it comes to jewellery this season, and thanks to key collections like Gucci and Miu Miu, every cool girl in town will look like she just struck gold at her local estate sale—literally!

If there's a singular challenge to summer dressing that rises above them all, it's how to wear stylish looks that are casual enough to be seasonally on-trend—without looking sloppy. 

It can be especially tricky nowadays, when the undone look is very in. Our resident style expert, Banana Republic creative director Marissa Webb, tends to excel at achieving a perfectly polished casual summer look—so, naturally, we consulted her.

"You have to be able to adjust according to your lifestyle," Webb told us. "I'm in a business where I'm running around being very physical and the next minute in a serious meeting where I need to look polished. It gets a little tricky at times. Most importantly, keep the words contrast, contradiction, and opposites in mind when pulling together your casual yet polished look."

Keep scrolling for Marissa Webb's tricks for making your favourite casual looks super-polished!

Toss a well-tailored blazer over your casual jeans and T-shirt to add polish to a casual outfit.

Create a simple formula that works for you. For example, if you know you want to wear comfortable denim, try to find something a bit dressier on the top. If you know you want to wear your favourite "get it done" T-shirt, pick something more tailored to wear over it.

I like the contrast of heels with casual bottoms. I'll often style my easy cargo pants, denim, or soft lounge pants with a heel.

Loop Knot Ankle Tie Heels

Mix it up with something dressy and something casual, like a feminine lace blouse with cargo pants or denim. I find the contrast more interesting, and it's also a great way to not be over- or under-dressed.

Have fun with your accessories and don't underestimate them. Stack up your necklaces or bracelets with your favourite easy T-shirt for the right mix of polished casual.

Guess Kyle Raspberry Checked Shirt ($42) in Bright Raspberry Multi

Soft Joie Auburn Top ($78, 310.360.2700) in Caviar / Porcelain

Genetic Denim The Ava Pale Shorts ($155) in White

Mali Beads Aida Necklace ($36) in Brass

Marc by Marc Jacobs Leonora Leopard Print Scarf ($158) in Blue Multi

Rose Pierre Water Snake Bracelet ($64) in Sunset Pink

Rose Pierre Water Snake Bracelet ($64) in Obsidian Black

Baublebar Oruga Bracelet ($20) in Pink

Tory Burch Katie Binocular Case ($450) in Blue Nile Multi

Via Spiga Karissa Heels ($113) in Mahogany

Similar Styles:

Soft Joie Rahata Top ($88) in Caviar

Genetic Denim The Ivy Cutoff Shorts ($135) in Swan

Hair: Charles McNair/Jed Root 

Makeup: Kristina Brown/Jed Root

Manicure: Michelle Saunders/Celestine Agency

 I’ve got my eyes on these 10 beauties for the next time I play dress up.

Sunset Gold Plated Turquoise Clip Earrings ($800)

?Featuring 18k gold chains and turquoise stones, it won’t take much for these shoulder-grazers to shimmy their way into the spotlight!

Stick Drop Earrings ($28) in Mixed Metal

In terms of ear ornamentation, this Topshop pair packs a one-two punch! Just make sure you pull your hair back so they stay the focal point. 

Bejeweled Bug Crystal Earrings ($295) in Black Diamond

?It’s all about the details with Oscar de la Renta’s handcrafted bijoux. If you look closely at these drop earrings, you can see tiny bejeweled beetles.

Opla Flowery Filigree Earrings ($1310) in 18k Yellow Gold

This Judy Geib pair isn’t lacking in, shall I say it, flower power. The cascading gold and 18k yellow gold blooms will lend an artsy touch to any look.

Flapper Fringe Earrings ($475, +44 (0) 207 0339853) 

?I was immediately drawn to the Art Deco elegance of Mawi’s Fringe Earrings. The Gatsby-era design feels completely on-point.

Crystal Drop Earrings ($183) in Fire Opal

?With earrings this opulent, it’s important to keep the rest of your look minimal. I might even pair them with a low-key t-shirt and jeans ensemble for an interesting contrast.

Chandelier Earrings ($165, 516.641.7212) in Gunmetal with Black Crystals 

Play up the romantic Goth vibe of these chandelier earrings with a strapless black dress and burgundy lip. 

Mega Ear Cuff ($51) in Crystal

?Sometimes just one statement earring is enough, and that’s certainly the case with this rhinestone-encrusted ear cuff.

Lucite Collection Santa Fe Deco XL Arrow Head Chandelier Clip Earrings ($295, 212.727.1093) in Grey and Black Lucite 

?The architectural design of these glittery gems call for an equally modern cocktail dress with dramatic 3D folds.

Silver Mesh Cascade Earrings ($24)

These earrings are showstoppers, sans all the glitz and glamour. They’re perfect for when I’m embracing my edgier side. 

Band of Outsiders S/L Jumpsuit ($1,295, 212.876.1368) in Black

Baublebar Smokey Pave Disco Studs ($26) in Smoke

Topshop Whistle Pendant ($20, (0044) 1277844476) in Gold

Jerome Dreyfuss Paf Handbag ($545, 212.334.6920) in Polka Dot Watersnake

Louis Vuitton Satin Pumps with Stingray Bow Detail ($945) in Black

Similar Styles:

Baublebar Pave Studs ($22) in Silver

ModCloth Whistle While You’re Workin’ Necklace ($17)

Jerome Dreyfuss Paf Handbag ($545) in Leopard

In Clueless, when Cher dubs popular girl Amber a “Monet,” it’s because she appears attractive from afar but her looks don't quite match up upon closer inspection. Thankfully, that’s not the case with these artistic watercolor pieces, which look perfectly stylish whether seen from a distance or not! This season, it seems as if everything from silky button-downs to skinny jeans are drenched in the dreamy, pastel motifs, and the look couldn’t be more appropriate for spring. At turns the trend is chic and youthful, like Ashley Madekwe’s Etro Butterfly Print Dress ($1998, 310.248.2855) at the Rodeo Drive Walk of Style event in Beverly Hills last December. The Revenge star’s frock stands out, thanks to the brushstroke butterfly print that pops against the white mini dress. At other times, watercolors feel more romantic and feminine, particularly on Lela Rose’s Withering Floral Organza Draped Bodice Dress With Cowl Detail And Full Skirt ($1795) from the S/S 13 collection. No matter what your sensibilities may be, we’ve rounded up a few watercolor-inspired styles for you to try, so read on.

Marni Printed Cotton-Jersey T-Shirt ($270)

Marni’s playful top displays a watercolor tiger print from Dutch artist Rop van Mierlo’s book Wild Animals. Add some polish to the tee with a fitted blazer and slim blue jeans.

CC Skye Bright Love Lucite Clutch ($255) in Orange/Yellow

This boxy Lucite clutch adds a refreshing splash of colour to your look. Style it with a crisp button-down and white trousers for a decidedly fresh take.

Theyskens’ Theory Damara Printed Silk Mini Dress ($595)

For a watercolor look with downtown appeal, try Theyskens’ Theory silk dress. The of-the-moment marble print lends it a contemporary vibe, and the front ties echo the current shirt-tied-around-waist trend too.

Guess Brittney Skinny Ankle Jeans ($138, available May)

Upgrade your classic skinnies with Guess’ sophisticated pair rendered in a mix of hazy hues. Play up the pastel palette by teaming the jeans with a silk blouse in soft lilac or creamy yellow.

tarte Cheek Stain ($30) in Awakening

Make watercolors part of your beauty repertoire with this universally flattering cheek stain. Apply to the apples of your cheeks for a natural, sweet-looking flush.

Charles David Bliss Heels ($230)

The abstract print gets a polished twist in Charles David’s pointy-toe heels. We suggest wearing these with a slim pencil skirt for a soft, feminine take on office-appropriate attire.

Harlyn Blouse ($187, 213.614.9292)

If you favour bold, splashy prints, you’ll want to snag Harlyn’s button-down. Wear it with a pair of bright trousers for a statement-making ensemble.

BaubleBar Marquise Leaf Drops ($26)

Tap into the watercolor trend with pastel blue baubles. Slip them on with an equally elegant cocktail number at your next soiree.

Lela Rose runway image, courtesy of Lela Rose; photo of Ashley Madekwe, courtesy of INF.