Jessica Simpson: Designing Scuba Gear?

Jessica Simpson runs errands around New York City on Friday (March 25).

The 30-year-old singer then headed to JFK International Airport to catch a departing flight.

Earlier this week, Jess teased she may be expanding her $1 billion fashion empire with some unusual designs.

“Scuba gear coming soon for @jscollection heels for every occasion ;),” she tweeted, along with a pic of a pair of blue flippers with stiletto heels.