Caught in the Act

An Expectant Vanessa Minnillo Hits the Club – in Five-Inch Heels! – with Nick Lachey

04/03/2012 at 06:00 AM EDT

Vanessa Lachey was beaming all night while hanging out with hubby Nick at the opening party for Marquee – the Star, a nightclub in Sydney, Australia.

"She was literally glowing," a source says of the pregnant starlet, who also wore five-inch heels to the soiree. She and Lachey spent their evening dancing together and being generally affectionate – with Nick rubbing Vanessa's belly. They also chatted up Kellan Lutz and discussed how they're preparing for their baby's arrival.

Also at the party: Joe Jonas, Wilmer Valderrama and Ashlee Simpson, who spent the night hanging out with Minka Kelly – a recent companion of Valderrama's.

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