Sources tell "Extra" exclusively that Lindsay Lohan's boyfriend, Harry Morton, just purchased an engagement ring for her at Cartier in Beverly Hills.  
 
In a statement to "Extra," a representative from Morton's company, Pink Taco, says, "I can confirm that Harry was shopping in Cartier…but what he purchased I cannot confirm.  If it was in fact a gift then that's between him and whomever the gift is for."
 
For all the details including exclusive video of Morton's Beverly Hills shopping spree, tune into "Extra" tomorrow, Friday, September 1.