Anne Hathaway Meryl Streep Iron Lady Premiere Pictures

Meryl Streep wore Stella McCartney to welcome friends and family to the NYC premiere of her Iron Lady last night. Her Devil Wears Prada pal Anne Hathaway brought fiancé Adam Shulman to the screening, with Hathaway showing off her brand-new diamond. Anne Hathaway's engagement ring apparently is worth a whopping $150,000, according to Kwiat, the company who made it. The brand's founder recently commented that Adam was aiming for a "beautiful, timeless, and special" look when designing the piece. Olivia Wilde also stepped out in a long-sleeved Dolce & Gabbana number. Adam, Anne, Meryl, and company kept the party going with an after-hours bash at the Royalton Hotel.

Meryl woke this morning to the great news that she picked up a Screen Actors Guild Awards nomination for her role as Margaret Thatcher — check out the full list of 2012 SAG Awards nominees! She's up in the best actress category vs. Albert Nobbs's Glenn Close, The Help's Viola Davis, We Need To Talk About Kevin's Tilda Swinton, and My Week With Marilyn's Michelle Williams. We'll find out tomorrow a.m. if Meryl and her competitors also pick up nods from the Golden Globes, too!