Rosie M.
5.0
Founder & Startup Consultant | Brown Alum | Scale Your Startup
Studied at Brown University
Works at Perkies
Available Monday at 10:30 PM UTC
Questions? Start chatting with this coach before you get started.
Rosie's Coaching Offerings
Early-Stage Startup Coaching — Fundraising, Building, Growth
Best for early-stage founders trying to fundraise, build, hire, or grow
Starting at $6605h+ of coaching
Build a Successful Startup — In-Depth Founder Support
Expert coaching to help you achieve your entrepreneurial goals
$2,38020h of coaching
Pay as you go
Get help with Fundraising and Ideation.
Rosie also coaches for College, Executive, and Life. View all.
Rosie’s Entrepreneurship Qualifications
Experience level: Executive
Rosie has helped clients get into these companies:
I’ve spent the last seven years building Perkies, a consumer brand born from my college dorm room and grown into a multi-channel business with national retail partnerships at Nordstrom, Target.com, REVOLVE, and GoPuff. Through this journey, I’ve learned firsthand what it takes to bring a product from concept to market, build brand awareness on a scrappy budget, and navigate the challenges of retail expansion, manufacturing, and fundraising. Along the way, I’ve had the privilege of mentoring and consulting for other founders across various industries, helping them validate product-market fit, sharpen their brand positioning, and build the right connections to scale in both DTC and retail channels. Whether you’re figuring out your launch strategy, looking to expand into retail, or navigating early-stage product development, I’m here to share real-world experience and help you move forward with clarity and confidence.
Rosie can help with:
Fundraising
Ideation
Rosie also coaches for College, Executive, and Life. View all.
About Rosie
Hi! I’m Rosie Mangiarotti, the founder of Perkies, a mission-driven brand that started as a class project at Brown University and has since grown into a recognized name in both fashion and health. I’ve spent the past seven years fully immersed in the entrepreneurial journey—taking Perkies from concept to national retail distribution, securing a patent, and expanding our product line from a retail brand to a mission-driven brand serving women impacted by breast cancer. Along the way, I’ve had the privilege of learning from some of the best. From my time at Brown University to being selected for the UCLA Venture Accelerator, I’ve surrounded myself with mentors, coaches, and advisors who have helped shape me into the founder I am today. I’ve spent these years as a sponge—soaking up lessons from experienced operators, investors, and fellow founders. At the same time, I’ve made it a priority to pay it forward. I’ve mentored aspiring founders, supported young professionals navigating their careers, and worked closely with students to help them grow and achieve their goals. Coaching matters to me because I know firsthand how transformational the right guidance can be. If you’re looking for someone who understands the entrepreneurial journey—because they’re living it every day—and who is ready to share real-world insights to help you grow, I’d love to work with you.
Why do I coach?
Throughout my life, I’ve been fortunate to have coaches, teachers, advisors, and mentors who’ve guided me through school, sports, and my career. Their impact shaped not only my success but who I am today. After graduating from Brown, I felt called to pay it forward. Over the last seven years, I’ve mentored founders, supported young professionals navigating their careers, and worked closely with students to help them grow and reach their goals. Whether through advising, tutoring, and mentoring, I’ve seen the power of showing up for someone’s growth. As a beneficiary of great coaching myself, I know how transformational it can be—and I’d be honored to support you on your journey.
Work Experience
Member
Dreamers
February 2022 - Present
Dreamers & Doers is an award-winning community and diverse ecosystem amplifying extraordinary entrepreneurial women with the support and visibility they need to change the world. 💫
Startup Consultant
Freelance
April 2020 - Present
Offering invaluable expertise to founders and aspiring entrepreneurs looking to navigate the challenging waters of building a successful company. With over five years of hands-on experience as a founder myself, I've honed the skills and insights necessary to help you turn your vision into a thriving reality. Social Media Marketing, Direct to Consumer Marketing and +9 skills
Tutor
Freelance
September 2019 - Present
Assist high school students in developing exceptional writing skills, particularly in crafting compelling college application essays through the creative in-depth brainstorming sessions to identify unique impactful essay topics Guided middle school students in both a a home-school setting and a tutoring setting in all subjects, fostering a comprehensive understanding of mathematics, science, english, geography and social students Provide academic assistance for both high school and middle school students in all subjects Leverage advanced communication skills to connect with students and motivate them towards academic success Online Tutoring, One-on-one Instruction and +2 skills
Founder
Perkies
June 2018 - Present
Perkies creates innovative undergarments for women to wear. Perkies’ signature products include Perkies Petals: Premium, Reusable Nipple Covers as well as Perkies Nips: Nipple enhancers to provide a consistent perky look - aligned with the pop culture trend and for women who have had a mastectomy and no longer have nipples post-surgery. Perkies is dedicated to sustainability, inclusivity, and empowering women to feel confident, while also donating 5% of website sales to the Breast Cancer Research Foundation®. Accomplishments: Selling on premier websites including: REVOLVE, Nordstrom, Urban Outfitters, Aritzia, Target, Shopbop, Amazon US/UK/AUS & more. Nominated for the Fashion Group International Rising Star Awards (2025) Speaker at the 2024 Etail London: UK's Retail eCommerce Conference Featured in Cosmopolitan as "16 Best Sticky Bras of 2024, Tested and Reviewed" 2023: Featured in BRIDES as “Best Classic Pasties” WWD as “Best Sheer Dressing Accessories” InStyle as “Best [Nipple Covers] on Amazon” WWD as "Best Nipple Enhancers" and “Best [Nipple Covers] for White Shirts” Speaker at the 2023 World Retail Congress: A conference that brings together 1,200 executives who are all focused on the transformation of retail and in understanding how best to serve consumers across all channels 2021: Featured in Forbes “Perkies Has Created The Future Of Sticky Bras For Women To Wear” Named an "Inno Blazer Finalist", "2020 & 2019 Startup to Watch", "50 on Fire Award Winner" & "25 under 25" by Rhode Island Inno Finalist and Winner of the audience vote for the Cox Business "Get Started RI" pitch competition (2018) 2018: Participant in Brown University’s Breakthrough-Lab; intensive & selective 8-week accelerator program for startups Placed top 8 out of 50 teams for the Brown Venture Prize Competition & pitched in front of 6 entrepreneurs/Venture Capitalist Judges Awarded 3rd place in the Rhode Island Elevator Pitch Competition (November, 2017)
Public Speaker
Freelance
May 2018 - Present
Public Speaker: Engage in insightful conversations to share my expertise with a global audience, discuss topics I'm passionate about, and establish myself as a thought leader in my field. Etail London, spoke on two different panels. The first panel addressed “Meaningful Retail Tactics to Drive Brand Loyalty and Customer Retention” and the second panel addressed "Omni-channel Branding, Curating an Engaging Brand Story & Customer Experience” as part of the C-Suite Panel (June, 2024) Beauty Bar Panelist, spoke at the SoHo House in West Hollywood alongside Breast Surgeon, Dr. Elise Min. We discussed the post-care of women who have gone through breast cancer, the various treatments offered and how companies like Perkies are revolutionizing the way surgeons and patients can handle post-mastectomies (May, 2024) World Retail Congress, spoke on “How to Attract & Retain a New Generation of Customers” (April, 2023) She Mark Panelist, spoke on “Growing and Scaling a Business in a Woman’s World” (2023) Guest Speaker on the Entrepreneurial Podcast (2023), The Positive Impact Philanthropy Podcast (2022), Awaken Your Inner Awesomeness Podcast (2022), The Record Room Podcast (2021) Guest Speaker at Brown University, Innovation Dojo Student Led Workshop Series (2023) Fashion at Brown Panelist (2025, 2022 & 2021) Pitched at the Cox RI Business Pitch Competition, Brown Venture Prize, RI Elevator Pitch Competition (2018) Motivational Speaking, Experienced Speaker and +1 skill
Education
UCLA Anderson School of Management
Venture Accelerator Program, Business Administration and Management, General
2025 - 2025
The Venture Accelerator at UCLA Anderson is uniquely designed for UCLA and Los Angeles startups to thrive. Boasting the breadth of expertise offered by the nation’s top public university and connections to the business and Anderson alumni community, the Accelerator is where companies-in-residence succeed as a result of continuous co-working and networking. Centered in Los Angeles, our location allows our companies access to the fastest-growing and most diverse Venture Capital market. With immersive, experiential programming and advisors provided by UCLA Anderson’s Price Center for Entrepreneurship & Innovation, these startups enjoy a steady stream of insights and support to promote performance beyond projections.
Brown University
Bachelor's degree, Business, Entrepreneurship, and Organizations: Organizational Studies
2014 - 2018
Activities and societies: Member of the Varsity Brown Women's Lacrosse team
10 Reviews
Overall Rating
5.0
Rosie has helped Leland clients get into Harvard Business School
Rosie has helped clients get into these companies: