The world has yet to catch a glimpse of Hilary Duff's baby... and the "Lizzie McGuire" star insists on keeping the suspense going!

In fact, she seems only to be heightening the tension. She did recently post a photograph of her son... but it was only of his feet.

The photo was posted with a message: "My favorite little feet".

Meanwhile, the singer and actress has confessed she is struggling to get back into shape, following the pregnancy.

When she was complimented on her looks by one of her followers, the singer wrote back: "You should have seen what I looked like last week.eek surprised I still have a husband! It was time to throw them heels on;) guurl."

The Disney star gave birth to son Luca Cruz Comrie on 20 March.