Have you ever wondered what made Victoria's Secret a multibillion lingerie empire? Aside from its signature sexy apparel, its roster of top supermodels also help boost the company's annual sales.

Victoria's Secret is known for being extremely meticulous in choosing the models who represent the brand, particularly those the company labeled as its "Angels." As a matter of fact, models should have the appeal to lure other women and not to threaten or turn off potential customers.

"The merchants drive the decisions on the Angels," DNA Model Management Richard Habberly told Women's Wear Daily. "They [Victoria's Secret] try the girls out, and certain girls sell product. They're women that appeal to other women. And they're special because they never appear in men's magazines. Once you start to do that, they become threatening [to potential female customers]."

Since Victoria's Secret wants customers to like the models it features, top models Miranda Kerr and Erin Heatherton were booted out for reportedly not selling enough lingerie, not to mention their personal dramas.

Kate Upton, on the other hand, was rejected due to her incessant sexy pictorials and commercials that made executives believed she wouldn't appeal to female customers.

Speaking of top models, here are the top 10 young models who work for Victoria's Secret Pink line that exude the potentials to be future spokeswomen of the retail company, as Business Insider listed.

1. Leila Nda

2. Yumi Lambert

3. Bridget Malcolm

4. Ming Xi

5. Megan Puleri

6. Gigi Hadid

7. Josephine Skriver

8. Devon Windsor

9. Rachel Hilbert

10. Bella Hadid

Meanwhile, being a Victoria's Secret model entails a lot of benefits, career-wise and financially. In fact, most if not all highest-paid models in the world have worked for the lingerie giant.

"Becoming an Angel significantly increases a model's earning potential due to their visibility around the world," Habberly said. "It changes the girls' careers completely."

While VS Angels Adriana Lima, Alessandra Ambrosio, Behati Prinsloo, Candice Swanepoel and Lily Aldridge have remained with the brand, the company added 10 new models to their "Angels" roster in 2015. And here are Victoria's Secrets newest Angels:

1. Martha Hunt

2. Romee Strijd

3. Stella Maxwell

4. Lais Ribeiro

5. Kate Grigorieva

6. Monika "Jak" Jagaciak

7. Taylor Hill

8. Jasmine Tookes

9. Elsa Hosk

10. Sara Sampaio

Meanwhile, Valentine's Day is just around the corner so Vogue magazine caught up with VS Angels Alessandra Ambrosio and Adriana Lima to ask them about their V-Day standards.

During the interview, the Brazilian supermodels revealed their Valentine's Day tips, dos and don'ts, favorite lingerie color, wish lists as well as their Valentine. But the most interesting were the models' responses when asked why V-Day is important.

"I think we should express our love for each other every other day. But Valentine's gives you a reminder to do that," Ambrosio said. While Lima answered, "I personally think you should show your loved ones you care every day. Even if it is something small, try and show them. I think this holiday allows you to go the extra mile."