Emma looked stunning on last night's live launch show in a tight navy dress, and she had BBUK fans won over as the new host of the show.
“Already I love Emma Willis more than anyone ever," one fan tweeted, while another added: “Only five minutes in and Emma is awesome! Why she was never chosen as Davina’s direct replacement I’ll never know!”
A third said “She’s bloody fantastic!”
And one viewer claimed Emma's 11 second introduction was better than anything than Brian Dowling did in his two years as host!
But Big Brother's notoriously hard to please fans weren't so taken with Emma's replacement for Bit On The Side, AJ Odudu.
"Who is she?, where did they get her from?. Its bizarre to me as she doesn't seem to have a background," complained one viewer.
Fans also found it hard to understand AJ's Blackburn accent, with some complaining: "I need subtitles to know what the hell she is rabbitting on about."
Her co-host Rylan Clark seemed to fare much better, with one fan writing online: "AJ cant be a presenter. Even Rylan with no experience is better than her "
The ratings for last night's Bit On The Side told their own story, with the first live episode starting with over 900,000 viewers but dropping off to some 600,000 by the end.
Big Brother continues nightly on Channel 5, with Bit On The Side airing straight after the main show Monday-Saturday and at lunchtime on Sundays.