Alba opted for a black-and-white outfit for her party. On the top, she sported a strapless white corset top with a sheer, cinched waist. On the bottom, she went for a pair of high-waisted black pants.

Victoria showed off her birthday glam, which included a strappy white corset top and a pair of white pants with silver ... I am so honored to be able to wear this tonight. I feel so, like, business ...

Victoria showed off her birthday glam, which included a strappy white corset top and a pair of white pants ... I am so honored to be able to wear this tonight. I feel so, like, business but ...