Charlotte glammed up in a mini skirt and T-shirt while Sophie wore a slinky yellow dress for the bout.
The star also posted a backstage shot of the pair with triumphant Aaron, who celebrates his birthday today.
She captioned the shot: "Happy birthday to the one and only @aaroncgshore 🎁🎈🎉
"Last night was absolutely amazing, yet again you proved all the narrow minded dirty a****s wrong!
"So so so so proud of you and how far you have come! Taking control of what is gunna be the most successful ever journey for you!
"Always my fellow dj Aaron’s tho, love you so much!"
And alongside a picture of the gang sitting ringside, she wrote: "Front row....so close I can smell the blood."
Guardians Of the Galaxy star Chris Pratt was also in the audience to watch the fight.
Aaron kept up his 100 per cent record with an incredible first-round stoppage over opponent Ash.
The Geordie Shore-turned-MMA star pulled off the stunning win on the biggest stage of his promising fight career at the SSE Wembley to take his total to 4-0.
Geordie Shore ace Aaron Chalmers MMA training for Bellator