Our Women to Watch class of 2013 hails from a diverse group of companies, from Aegis to National Geographic and Taco Bell and more. But they have one thing in common -- they have accomplished much and are facing fresh challenges that make them worth your attention.

Gigi Guerra,

Target

Anna Bateson,

YouTube

Angela Courtin,

Aegis Media

Leeann Leahy,

Via Agency

Shazi Visram,

Happy Family

Tereasa Surratt,

Ogilvy & Mather

Tressie Lieberman,

Taco Bell

Anna Banks,

Organic

Marcela Aguilar,

Gap

Erin Hunter,

Facebook

Melissa Brenner,

NBA

Emma Carrasco,

NPR

Katrina Cukaj,

CNN

Ruth Gaviria,

Univision

Sally Grimes,

Hillshire Brands Co.

Tami Erwin,

Verizon

Michelle Klein,

Diageo

Laura Miele,

EA Games

Courteney Monroe,

Nat Geo

Mollie Spilman,

Millennial Media

Ly Tran,

Proof Advertising

Jennifer Warren,

Radioshack

Margit Wennmachers,

Andreessen Horowitz

Julie Bornstein,

Sephora