Whether playing adorably rambunctious preteen twin sisters in “Parent Trap” or the hot new high schooler in “Mean Girls,” Lindsay Lohan knows versatility in acting. Double for hairstyling. Nexxus has tapped the star and new mother for its new campaign, “The Style Swap,” where Lohan draws inspiration from some of her most memorable characters to achieve different looks while showcasing the versatility of the brand’s Styling Line. “I bring all the tips and tricks I’ve learn...