Whatever J. Lo wants, J. Lo gets.

Jennifer Lopez borrowed $50,000 worth of diamonds from Robert Mouawad to attend the launch of Andrea Lieberman’s fashion line, ALC, at Barneys in Beverly Hills but later decided to keep the loaner diamonds to add to her private collection.

Cheapie!

“We received a call from [her manager] Benny Medina, informing us that Jennifer was going to keep the jewelry,” an insider blabbed to the NY Post’s Page Six on Wednesday. “As far as Mr. Mouawad is concerned, Jennifer can have whatever she wants, but a premature demand seemed presumptuous.”

There’s no ill will, though. “Mr. Mouawad is the Swiss billionaire who purchased the 60-carat flawless Mondera Diamond for $50 million. He will lose no sleep over $50,000, and frankly, Jennifer’s endorsement is priceless.”