Barack and Michelle Obama are celebrating their youngest daughter as she marks her 24th birthday, despite the swirling rumors about their marriage.

Michelle Obama shared a photo to her Instagram of the family seemingly on vacation together and she issued a heartfelt message to Sasha.

'Happy birthday to my sweet girl, Sasha! Can't believe how quickly time has flown. I'm so proud of the woman you've become. Love you always!' Michelle wrote.

The Obamas have been married for 32 years but have faced ongoing rumors about their marriage status over the last several months.

Michelle last month dismissed speculation about marital issues and addressed the rumors head on during an episode of The Diary of a CEO.