panther hat airport

While we're guessing she's happy to reunite with beau John Mayer, it looks like Katy Perry is still devastated over the death of her ex-boyfriend, Sons of Anarchy actor Johnny Lewis.

The 27-year-old singer returned home from Japan last night, and she clung tight to her bodyguard and showed hardly any emotion when she got into her car. She still hasn't released a statement about Lewis, who was found dead in a driveway on Wednesday after allegedly murdering his 81-year-old landlady, Catherine Davis. Lewis and Perry dated from 2005-2006, and police told the media that they believe Lewis killed Davis' cat and then beat her to death while under the influence either PCP or meth.

On a lighter note, it was recently announced that Katy will accept Billboard’s Woman of the Year Award at the 2012 Billboard Women in Music event in NYC on November 30 ... congrats!