Jessica Alba stuns in red corset and lace mini dress as she celebrates her 45th birthday

Alba wowed in a red corset with classic blue jeans, showcasing her flat midriff.

The 'Dark Angel' star also dazzled in a lace mini dress for a night out to celebrate her birthday.

The mom of three captioned the photos: "The best weekend celebrating with the best people - so much love."

Alba posed on a balcony in a strapless crimson top, paired with her low-riding denim bottoms.

She wore her long brunette locks loose around her in waves with her Fendi handbag slung on one shoulder.

In the next slide, Alba was seen blowing out her birthday cake candles as she smiled ear to ear.

Another image showed her hugging her pal.

One slide featured Alba as she was in her glam chair before getting ready for her party.

She posted a group shot with Ramirez and her pals, as well as images from inside the venue, and snaps of their dinner.

The actress shared a video of their night - from the start showing her in a thigh-grazing black lace dress - to the cake at dinner.

The frock had spaghetti straps and a low-cut neckline.

The beauty finished off her look with a Chanel handbag and delicate necklaces.

One image showed Alba enjoying a more casual meal with her pal while wearing an LA baseball cap.

The last slide featured the star wearing a face mask, seemingly during her prep for getting ready for the night.