The Saturdays Talk Spice Girls, Dream Collaborations and Who Has a Crush on Justin Timberlake! (EXCLUSIVE)

The Saturdays are ready to take America by storm!

Tuesday night the girls-minus Frankie who had to go back to the UK for a family emergency- performed to a sold out crowd at The Roxy in Hollywood. Fans lined up around the block for hours to catch the performance, and the UK superstars did not disappoint.

With an E! reality show around the corner (Chasing The Saturdays premiering January 20) we want you to get to know the girls of The Saturdays: Una Healy, Rochelle Humes, Mollie King, Vanessa White and Frankie Sandford.

The ladies were nice enough to answer a few of Cambio's burning questions:

People are quick to compare you to the Spice Girls-in what ways are you similar, and in what ways are you different?
Being compared to the Spice Girls is an incredible compliment! They are the ultimate girl band and we all grew up listening to their music.We're similar to them in that we genuinely are all best friends and we share their belief in girl power and what it stands for.

Frankie and Rochelle were managed by their manager Simon Fuller when they were in S Club Juniors - and our manager Peter was the man behind their nicknames (Sporty, Posh, etc) so there's a little connection there!

If you could collaborate with any artist dead or alive, who would it be and why?
We all have very different tastes in music, and have different musical idols. Mollie would love to collaborate withBritney Spears, Rochelle with Beyonce, Frankie with Demi Lovato, Vanessa with Frank Ocean and Una withSheryl Crow.

What is one thing you need with you on the road?
We travel a lot so we all have travel packs that consist of skin moisturizer, an updated iPod, our phones so we can check Twitter, granola bars for snacking on long journeys and plenty of water to keep us hydrated.

Who gets into the most trouble (in a good way!) when you're on tour?
Vanessa is the biggest troublemaker of the group! She absolutely loves a party and it's sometimes difficult to drag her away when we have an early start the next day. She gets up to all sorts of mischief. On one of our tours she took on the role of paparazzi photographer. She kept bursting into our rooms with her camera at all sorts of inappropriate moments!

Who was your first celebrity crush?
Mollie is the only single Saturday and we've been trying to set her up while we've been out here in LA. Her crush since childhood is Justin Timberlake. Unfortunately he's now officially taken, so she is out of luck!