Article continues below advertisementKelly Osbourne continues to raise concerns about her slim appearance following her father Ozzy's shocking death last July.According to a Tuesday, March 3, report, the singer's friends believe her "concerning weight loss" is linked to her ongoing "grief" over the rocker's passing.Article continues below advertisementSource: MEGAKelly Osbourne is reportedly still working through grief.An insider told TMZ that Kelly's inner circle is "giving her grace when it comes to her dramatic weight loss" because they know she's struggling to work through her grief.