Jessica Alba: G'day Australia!

A glowing Jessica Alba (in Gucci) cozies up with Nip/Tuck star Julian McMahon at the G’Day USA: Australia Week 2008 black tie gala at NYC’s Waldorf Astoria on Saturday.

G’Day USA: Australia Week showcases all things Australian from trade and investment, food and wine, film, arts, fashion, lifestyle, to indigenous culture and tourism.

Jessica, 26, and fiance Cash Warren, 28, are expecting their first child together in late spring, early summer.

30+ pictures inside of Jessica Alba @ G’day: Australia Week…