Filming for Videojug Food (an online cookery show), Fran seemed pretty confident she would come out on top as head chef as she took on Olivia in their cook-off earlier.
Nothing like a little sibling rivalry from time to time...
Sharing a snap of herself and Olivia armed with their kitchen utensils, Fran told her younger sister she better watch her back as they prepared for their kitchen challenge.
Along with her picture, Fran tweeted: "The ultimate sibling battle has begun - filming our @scofffood cooking show today...watch your back @Olivia_NY_."
And to add insult to her sister's culinary skills, the Chelsea beauty seemed to laugh when Olivia quipped "may the best sister win" on Twitter as Fran simply replied "ha".
Competitive much, Fran?
Both Fran and Olivia made their Made In Chelsea debut last year in series five. While make-up artist, Olivia, only mixed with the Chelsea gang for just the one season (she now blogs and has her own YouTube channel), Fran is a regular on the E4 show and has recently spent the summer filming in New York.
Speaking about her stint Stateside to film for Made In Chelsea: New York, Fran told Reveal she fell in love with the Big Apple and "would move there in a heartbeat".
The one thing that would keep her in London, though? The British guys - apparently they are "definitely hotter".
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