For those wondering about her pre-party routine, the new mom (who welcomed son Jack in August 2024) kicked off her birthday with what she called a “bday burn” workout session with trainer Kirsty Godson, proving that even birthday girls don’t skip leg day. Which, of course, makes plenty of sense when you’re going pants optional!

Hailey Bieber rang in her 28th birthday in style. Last night, she took to Instagram to share a sneak peek at her birthday celebrations, which seemed to take on a martini theme. Her roundup of photos highlighted her cake—which leaned more into the theme with frosting that read,

Hailey Bieber toasted to her 28th birthday in style with a “28-tini” celebration that showcased her love for martinis.