The two judges are set to appear at the event ahead of the series kicking off this weekend, and they were each spotted whizzing through London's Heathrow Airport earlier today (28 August).
Nicole, 35, looked enviably tanned as she arrived, wearing a pretty white summer dress and a leopard print scarf wrapped around her shoulders. She had previously been sunning herself in Hawaii on a family getaway.
In fact, the songstress still looked as though she was on holiday today, as she also sported a large brimmed white hat, sandals and sunglasses. Her gorgeous glow was enhanced by bronze make-up and a pink lip.
Sharon, 60, kept her airport style simple and comfortable by wearing a black and white printed kaftan with black trousers and pumps. She accessorised with some trusty shades and a large black holdall.
The X Factor judging panel has been shaken up a little this year with the inclusion of Sharon, following Tulisa's exit from the show.
And it sounds like we are in for a real treat with Mrs Osbourne back on our screens, since she has been getting along swimmingly with her fellow judges - including Gary Barlow and Louis Walsh - and providing them with lots of laughs.
Nicole said: "I love having Sharon on the panel. She's outrageous fun, she's a riot. She's the queen of these shows. She's the one who started the show, so I'm having a blast with her. I learn from her on and off camera, and I love her."
Are you looking forward to seeing Sharon back on the judging panel? Let us know below, as the best comment each week wins £50!