Matthew Mosshart and Kelly Osbourne at VH1’s 2013 Do Something Awards in Hollywood

Kelly Osbourne was looking radiant from head to toe as she hit up the VH1’s Do Something Awards on Wednesday with her new fiancé Matthew Mosshart.

Kelly Osbourne, 28, wore a classy A-line frock with lace sleeves and modest scoop neckline along with black platform pumps.

She accessorized her outfit with a whimsical orange handbag that echoed her happiness with a decorated smile.

The bag was a definite hit at the star-studded event being held at Avalon in Hollywood.

Kelly Osbourne had every reason to be smiling with glee as she strolled down the lime-green carpet with Matthew Mosshart looking equally chic in black suit.

She recently announced her engagement to Matthew Mosshart after holidaying in the Caribbean.

Kelly Osbourne has raved that his healthy cooking and their joint workout sessions have helped to maintain her 70 lbs weight loss.