By LAURA SCHREFFLER
A winning look: Natalie Portman wears a red vintage polka dot Dior to the 2012 Oscars
At last year's Oscars she was heavily pregnant and had the pressure of being a best actress contender.
But it was a different story for Natalie Portman tonight as she waltzed on to the red carpet at the Academy Awards care-free.
The 30-year-old actress put her svelte post-pregnancy figure on show in a red polka-dot dress, eight months after giving birth to son Aleph and a year after she took home the best actress gong for her movie Black Swan.
Now and then: Last year, the 30-year-old wowed in Rodarte; now she's donned Dior
Her handsome fiance Benjamin Millepied stood by her side as she made her grand return to the Oscar red carpet.
Last year Portman was resplendent in regal purple Rodarte at the 2011 Academy Awards as she took home the Best Actress trophy for Black Swan.
But this year, the actress could finally let her hair down now that the pressure of winning an Oscar no longer rested heavy on her head.
She's got the look: The Black Swan star is dropping in Harry Winston diamonds
The Israeli-born stunner decided to have some fun with her frock this year.
Instead of choosing a serious, glamorous look, the No Strings Attached star opted for a fun red polka dot-covered vintage Dior dress.
The diminutive actress was literally dripping in Harry Winston diamonds.
A platinum and diamond V-shaped cluster necklace rested on her delicate throat, while platinum and diamond drop earrings by the same designer dangled from her lobes.
She also accessorised with a vintage-looking black pillbox clutch.
She kept her make-up minimal, eschewing bright red lips or smoky eyes so that her outfit might take centre stage.
Gorgeous couple: The actress and fiance Benjamin Millipied pose on the red carpet
The look of love: The No Strings Attached star gazes adoringly at her fiance
Portman has taken some time off this year to dote on her son, Aleph, who was born last June.
She announced both her pregnancy and engagement to her baby's father, ballet dancer Benjamin Millepied, at the same time in December of 2010.
Picture perfect: Portman won the 2011 Oscar for Best Actress
Golden girl: Then-pregnant Portman held her golden statue in 2011