Why so serious, Victoria Beckham? Twitter teases Posh Spice over her dour expression

Yes, it's becoming less acceptable to tell women to smile. But Twitter made an exception Saturday, as fans wondered why Victoria Beckham, attending her second royal wedding, looked so glum.

While her husband David beamed to the crowds and cameras, Victoria's expression was as serious as her relatively plain navy dress and hat.  

For the record, Beckham is aware she comes off a bit scowly. When she moved to the USA in 2007 after David joined MLS team the L.A. Galaxy, she told W Magazine, "I think (Americans) have this impression that I'm this miserable cow who doesn't smile. But I'm actually quite the opposite. When you're out there, they're trying to get pictures up your shirt, down your top. With all the flashes, it's as much as you can do to just find your car. I'm going to try and smile more for America."

Victoria Beckham did not look terribly thrilled to be attending her second royal wedding.

Maybe she abandoned that resolution when she moved home to the U.K.?

In any event, one viewer thought Beckham misread the invitation and thought she was attending "the funeral of Meghan Markle's single life."

Others wanted to know what she had to frown about.

While others thought she was serving Addams Family realness or channeling Squidward, SpongeBob Squarepants' sourpuss neighbor. 

One user thought she was acting way too excited for a British wedding.

And one even offered an explanation defending Beckham.

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