Kim Kardashian took her baby bump out for a night on the town.

The reality star stepped out with sister Kourtney Kardashian to Elton John's annual Oscar party on Sunday night, where she hid her growing belly in a pretty white gown.

Her hair and makeup were on point as she posed alongside Kelly Osbourne and Miley, who were wearing white as well. We gotta say, we love Miley's dress. The white, backless look is both sexy and classy.

Kourtney clearly missed the white dress memo though, as she showed up in an ornate rose gown.

And how tiny do the two E! stars look next to Heidi Klum, who towered over them in her very, very revealing gold gown? 

Check out more party pics above!

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