Lily Rose Depp is a grumpy gus -- maybe she's bummed out about her dad's failed 15-month marriage to Amber Heard.

The 16-year-old jetted into LAX on Thursday night wearing a black tank top, leggings, a red-hooded sweatshirt and a scowl on her face.

It's likely that the teen has landed in Los Angeles to comfort her father, actor Johnny Depp, and be by his side.

The day before, news hit that Lily Rose's dad had split from his much younger wife, who filed for divorce after 15 months of marriage, citing irreconcilable differences. Apparently, Johnny asked the judge to deny her claim for spousal support. While the world may have been a bit shocked by the announcement, it looks like Lily Rose was likely clued in on the break up.

Johnny, who has been busy promoting his new film Alice Through the Looking Glass, recently flew to Paris to visit his model/actress daughter in Paris a few weeks prior to the big news.

People is reporting that her father may have warned her about the split when he went to see her. The proud papa also supported his only daughter at a screening of her film The Dancer at the Cannes Film Festival during the weekend of May 6-8.

A source told the mag, "I don't think Johnny's trip to Paris this month was a coincidence."

We don't either!