Nicole Richie is getting rounder by the day!

The reality star showed off her baby bump as she attended a birthday party with boyfriend and baby daddy Joel Madden in West Hollywood yesterday.  Joel recently Tweeted about while he loves Nicole so much; she gives him the freedom to party.  He wrote last weekend on his Twitter page, "So Last night I ended up playing poker till 3 a.m. Thank God for my awesome girlfriend who let me sleep in today."