Osbourne sent her congratulations to Rivers on Monday night

By K.c. Blumm
Updated September 01, 2015 01:00 AM
Christopher Polk/Getty Images for VH1

Kelly Osbourne left E!’s Fashion Police earlier this year as it weathered a storm of controversy, but there were apparently no hard feelings when the show returned to the air on Monday night.

Osbourne, 30, sent a sweet message to the show’s new host and producer Melissa Rivers, Tweeting, “Congratulations on an awesome show tonight!”

Rivers replied, “@KellyOsbourne I love you!!! The flowers are amazing and you owned the lavender carpet! Xxx #friends #mysister.” (Rivers was referring to Osbourne’s gig hosting the MTV Video Music Awards preshow on Sunday night.)

While it was all hugs and kisses between them, Osbourne did not extend the same public well-wishes on Twitter to her former co-worker Giuliana Rancic.

The pair had a public falling out earlier this year after Rancic, 41, came under fire for comments she made on Fashion Police about Zandaya’s hair. Osbourne subsequently quit the show.

Kelly Osbourne’s Changing Looks

Osbourne’s less-than-friendly feelings towards Rancic resurfaced last week when she called the E! host “a liar” and said, “I don’t think she’s a good person.”

“I will never admit to liking Giuliana because I don’t,” she said.

When asked if she would ever consider returning to Fashion Police, Osbourne said, “If certain people weren’t there.”

A source close to Rancic told PEOPLE last week that the star is “not going to let Kelly’s comments bother her. She just thinks they’re pathetic.”