It looks like Lenny Dykstra is going for that old Brian Wilson look while he is behind bars.
A mugshot of the gray-bearded Dykstra, once known as "Nails" for his all-out playing style, was obtained by TMZ and shows the former New York Mets centerfielder sporting a ZZ Top starter face.
It bears little resemblance to the "Dude" of old.
Dykstra, who was a key member of the the Mets 1986 World Series championship team, is in jail for a full roster of crimes — including bankruptcy fraud, grand theft auto and a couple of lewd Craigslist incidents.
The self-taught financial investor made a fortune while his stock-picking website became popular and his financial advice magazine, the Players Club, had investment advice exclusively for pro athletes to help them with money management.
Dykstra's jet-setting lifestyle fell apart during the housing crash a few years ago.
The 49-year-old Dykstra was facing 20 more years in prison last December but prosecutors recommended 2 1/2 years — for three felony counts of money laundering, bankruptcy fraud and concealing assets — on top of the three years he is already serving for grand theft auto.