The Keeping Up With The Kardashians star was clad in all-black as she chatted on the phone outside her gym on Wednesday (14 January).
Khloe, 30, has been hard at the work in the gym over the past few months after admitting to gaining weight while filming Kourtney & Khloe Take The Hamptons! in New York last summer.
Her weight gain promoted big sister Kim, 34, to make a jibe about Khloe's behind on a recent episode of the E! show, saying Khloe needed to lose a few pounds.
Kim later insisted she'd just been joking, adding: "Every time I make a joke, everyone takes it literally. When I said, 'Khloé's butt is so big, she's got to lose a couple of pounds,' I was joking. She looks amazing."
Reveal is now on Google Plus! Join us here for the latest pictures, fashion and celebrity news!