The 30-year-old's representative told dailymail.co.uk that she is not pregnant.
Hathaway's brother Tom announced during his Oct 30 comedy show in Brooklyn that his celebrity sister was "about to be a new mom".
Pregnancy rumours started when the actress wore a puffy pink dress for an event Oct 19.
The "Les Miserables" star got married to actor Adam Shulman in 2012.
--IANS (Posted on 07-11-2013)