Mamet heads to the opening night of her father David Mamet's play The Anarchistin a lace top shrouded with fur, plus pristine white pants, in New York, December 2012.
An apparently makeup-free Mamet pulls off wearing what could be pajamas to the premiere of Stand Up Guys at MoMA in New York, December 2012.
Mamet steps it up a notch in lipstick and a floppy statement dress at the premiere of Girls season two in New York, January 2013.
She may have ended up on a few "worst dressed" lists, but Mamet started to come into her own style-wise with this custom-made, bralette-adorned gown by Honor at the 2013 Emmy Awards in Los Angeles, September 2013.
Mamet let her hair down and opted for a low-cut dress for the premiere of Girls season three in New York, January 2014.
Mamet dresses up her usual one-pieces in this strapless, ruffled edition by Elisabetta Franchi at the UK premiere of Girls season three in London, January 2014.
Mamet debuted a bob in a floor-length gown by Reem Acra at the 2014 Golden Globe Awards in Beverly Hills, January 2014.
Mamet stays true to the theme at a screening of Farmland in a not so downtown hat at Tribeca Cinemas in New York, April 2014.
Mamet looks decidedly unmutant-like in a crop top at the world premiere of X-Men: Days Of Future Past in New York, May 2014.
Mamet debuted the first of many hair changes in a sunny yellow summer dress at Honor's show during New York Fashion Week, September 2014.
Mamet opted for a crop top at the 2014 Glamour Women of the Year Awards in New York, November 2014.
Mamet stuck with her trend of ramping it up at each Girls premiere with a red leather mini dress at the premiere of season four in New York, January 2015.
Mamet pairs a gray head of hair with another pajama look at the New York premiere of A Most Violent Year, December 2014.
Mamet kept it bubblegum pink at the 2015 Golden Globe Awards in this tiered strapless gown by Andrew Gn in Beverly Hills, January 2015.
Mamet coordinates her suede in a rusty brown skirt and over-the-knee boots at the IMDb Studio in Park City, Utah, January 2016.
Mamet keeps her white leather jacket perfectly perched on her shoulders like a true fashion veteran at the fall 2016 Marc Jacobs show during New York Fashion Week, February 2016.
Mamet adds a whimsical headband to her floor-length, sheer-sleeved gown by Maiyet at the 2016 CFDA Fashion Awards in New York, June 2016.
Mamet's sheer sleeves show off her biceps at the Anthology Film Archives Benefit and Auction in New York, March 2017.
Mamet makes the case that the choker may still be alive at the New York premiere of Personal Shopper at Metrograph, March 2017.
Mamet sticks to velvet and leather in another jumpsuit at American Express's model-studded evening of Hamilton in New York, April 2017.
Mamet takes up her usual post in the front row at Marc Jacobs in a blue brocade dress and a giant fur coat during New York Fashion Week Fall 2017, February 2017.
Mamet keeps things high-waisted at the campaign launch for Burt's Bees Bring Back The Bees in New York, April 2017.
Mamet almost floats away in another babydoll dress outside The Late Show With Stephen Colbert in New York, April 2017.