Light denim may not be the obvious choice for a Hollywood premiere party — some might say it is a definite no-no for any occasion outside of a casual shopping trip or lunch date — but leave it to socialite Olivia Palermo to use her gift of sartorial versatility to transform the look from day to night. Tapped recently to be the celebrity face of a new Rochas perfume, she is proving she's more than capable of evolving from former reality television star to budding fashion icon. Palermo recently attended the premiere of the HBO original series "Girls" in New York City in a dressed-up pair of ordinary light jeans. She wore a white button-down shirt by Masscob, Pearl Queen sequin jacket by French Connection, blue Dior cross-body bag and purple silk cap-toe pumps by Giambattista Valli. Playing off the idea of jeans and a white T-shirt, she achieved a party-ready spin with the addition of a sequin jacket and cap-toe pumps. Palermo's ensemble is full of handy investment pieces for any fashion lover on a budget. To get her look, try an all-purpose pair of American Eagle skinny crop jeans in light authentic indigo for $39.50 and the RSVP Jelissa blouse from Zappos.com for $89.99. Both these pieces are staples for any season. Palermo may have chosen a skinny jean, but a boyfriend fit could also work with heels and a sequin jacket for a bit of structural contrast. Try the vintage straight jean in old faithful wash from Jcrew.com for $168, and for a sequin jacket, get the BB Dakota Royale jacket in gunmetal for $33 from 6pm.com. For a functional, stylish cross-body bag, get the Marc Fisher handbag in teal, $78 at Macys.com, the Cole Haan "Jitney" all-cross body bag in Pacific PA from Lordandtaylor.com for $98 or the Hobo cristel bag from Zappos.com for $98. Finish with the Vince Camuto Jorgie color-block pump, $89.99 at Dillards.com, that features a patent blue cap-toe.