Part of Female x Finance's Smart Girl Summer — a series where the women we admire share how they're investing in themselves while everyone else is slowing down.
This week's Smart Girl Summer edition is inspired by an incredible woman in our community: Polly H.
She went from Senior Associate to Director in investment banking in four years, one of the fastest paths to the title, in a seat only 13% of women hold. Alongside her day job, she built the Wall Street Girls Club, a platform for ambitious women in high-performance industries to talk openly about exactly what it takes to rise in a male-dominated industry.
What's most impressive isn't just ambition. It's that she got there by being unapologetically, entirely herself. Polly loves being feminine as much as she loves working hard, and she never saw those as two different people to manage. You're one person. Which means you can build your case around exactly who you are, instead of who you think the room wants to see.
Here's what that's actually looked like for her.
Build Your Own Case
When Polly went up for Director, she wasn't just being reviewed on her work. A global panel (people who'd maybe met her once, maybe never) would sit around a table and decide her fate in a single sitting. They weren't in the room for her best work. They didn't know what she'd actually added. Unless she told them.
So instead of waiting for her file to speak for itself, she ran her own campaign ahead of the vote. She met the people deciding, made sure they knew exactly what she'd built, and made her case before a single vote was cast. She got the promotion, one of the fastest paths of anyone to get there.
You don't have to be in finance, or up for a Director title, to recognize the moment. It's the client who barely knows your name deciding whether to trust you with the bigger account. It's the boss's boss who's heard your name twice and is about to decide, based on almost nothing, whether you're "ready." Somebody, somewhere, is always about to make a call about you with incomplete information, and the only real defense is making sure they have better information to work with.
The move: before your next review, ask, or pitch, write the actual case: three specific things you changed, with a number attached wherever you can. Then say it out loud to someone in that room before they have to guess.
Treat Your Wardrobe Like a Portfolio
Polly's approach to getting dressed is basically an extension of her day job: every purchase is an investment decision, not an impulse.
The tax hack: shop tax-free when buying anything high-value, abroad. She recently saved £2,000 on a Cartier bracelet simply by purchasing it outside the UK and claiming the VAT refund. She rates Italy as one of the best places in Europe to do it. If you're traveling this summer and eyeing something significant, that's real money left on the table if you buy it at home instead.
The math: cost-per-wear beats price tag, every time. A £400 piece you wear weekly for five years costs less per wear than a £60 piece you wear twice and donate. Buy the well-made basics you'll actually reach for: Polly's rule is invest well, wear it on repeat, keep it timeless. Black, for her, is a uniform, not a compromise.
Where to actually spend it: skip the high street where you can and shop mid-luxury labels during sales instead: Sandro and Maje for going-out pieces, M&S for office basics that hold up. None of it needs to cost hundreds to look considered.
The one accessory worth it: a proper leather-bound notebook. She uses Moleskine, initials embossed on the cover. Personal-brand-maxxing, sure. But it's also, not coincidentally, the exact tool you'd use to write the case for yourself before anyone asks you to.
Feed It Before You Need It
None of the above comes from waking up one day and deciding to feel confident. It's built in the background, on purpose, long before you need it. Polly's reading list for anyone doing that work:
The 7 Habits of Highly Effective People by Stephen Covey: the foundational case for operating with intention instead of reacting to whatever's in front of you.
The 5 AM Club by Robin Sharma: for a morning that sets your tone before anyone else can interrupt it.
The 5 Types of Wealth by Sahil Bloom: financial wealth is one column; mental, relational, and physical wealth compound too.
On podcasts: Aspire and the book Start With Yourself, both from Emma Grede; Hot Smart Rich with Maggie Sellers Reum; and the earlier catalog of The Diary of a CEO.
The Actual Smart Girl Summer Move
You don't need a promotion panel or a shopping trip abroad to put this into practice this week:
Write the case for yourself before someone else has to guess it
Next big purchase, work out the cost per wear before you decide, and buy tax-free if you can
Pick one thing off the reading list above and actually start it
Some women wait for the recognition (and the receipts) to come to find them. Some decide, in advance, exactly what both are going to say.
Follow more from Polly on her TikTok @polly_helvacioglu and subscribe to the Wall Street Girls Club newsletter.
Catching up on Smart Girl Summer? We've also covered how to read culture like an investor and what to consume instead of doomscrolling.
Sharpening your career doesn't take a break just because it's summer.
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