Little Luca Cruz is just 2 moths old, but he's already hitting the Hollywood party scene!

Proud mom Hilary Duff looked fierce in hot pink pants, a white tee and layers of colorful necklaces as she toted her $3,000 Celine black leather bag, while hubby Mike Comrie carried their baby son to a daytime fiesta in LA, on Saturday afternoon.

Aside from spending all her time with baby Luca, the former Disney star has been busy working on her upcoming album, and she's also planning to release a new book by the end of the year.

After undergoing three operations on his hip, Mike has officially retired from his career as an ice hockey player, and he's now on 24-hour diaper duty while also learning to cook for his new family!