Kelly Osbourne just got way cooler in our book!

On Friday, the 28-year-old appears on Bethenny Frankel's daytime show "Bethenny" -- where she opens up about her weight struggles and her relationship with fiance, Matthew Mosshart!

Osbourne has shed some serious pounds over the last few years, but even for her, it's still a battle to stay fit. See what Kelly says about finding the right balance, and why you shouldn't weigh yourself!

The "Fashion Police" star's diet wasn't the only hot topic, Kelly also shares some insight into her private relationship and engagement with fiance, Matthew.

Find out why the purple-haired beauty decided to keep her engagement under wraps for a year before going public with the big news!

What do you think about Kelly's healthy living advice? Tell toofab in the comment section below!

Make sure to tune into "Bethenny" on Friday for Osbourne's full appearance, and check out even more stars who've shed serious weight in the gallery below!


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