The new Xtra Factor host went for a classic, elegant and very feminine look for the Wembley Arena auditions on Friday (1 August).
DJ Sarah-Jane teamed a pretty floral dress with simple black heels for a show-stopping red carpet appearance.
We reckon we're going to have major fashion envy every week with her on the show this year! And when you throw Cheryl Cole in on top of that..
Sarah-Jane finished her look with seriously glossy curls and her trademark red pout.
The BBC Radio 1Xtra star was announced as the new host of Xtra Factor in June, replacing old host Caroline Flack.
"I've been a huge fan of The X Factor since day one and have watched every series religiously, so to be the new host of The Xtra Factor in its most exciting year EVER, is what dreams are made of," she said at the time.
"I'll be asking the judges the questions that people at home are screaming at their TVs - and you'd better believe I'm going in with a bang! I just can't wait to get on the road now and meet the auditionees!"
Reveal is now on Google Plus! Join us here for the latest pictures, fashion and celebrity news!