The 27-year-old penned a five-year contract with the west London side after the former Arsenal captain sealed a £27m move to Chelsea from Barcelona earlier in the summer transfer window.
And footage has emerged of Fabregas, who quit the Gunners for Barcelona in 2011, doing the famous party dance alongside attractive Blues physio Eva Carneiro.
Fabregas regained some dignity on Wednesday night as the Spain international scored a brilliant free-kick as the Blues were 3-1 winners against Vitesse Arnhem in a pre-season friendly.
MORE: Man United latest news
MORE: Arsenal latest news
MORE: Chelsea latest news
MORE: Liverpool latest news