Piper: 'Exercise is a pain in the ass'

Billie Piper has admitted that getting back into shape after having a baby is "boring and hellish".

The actress, who gave birth to son Winston in October, has been trying to lose her baby weight before filming starts for a new series of Secret Diary Of A Call Girl.

"Exercise is the most boring thing in the world," she told Hello!.

"It's boring and hellish, I'm sure, but if you've got to bare your ass on TV, you don't want it to look bad."

The star revealed that becoming a mother is the hardest 'job' she has ever had to do.

"I have worked some s**tty hours in my life but these are the toughest I've ever had, Winston is a restless sleeper. He gives us hope, then he changes his routine."

However, she added that the sleepless nights were well worth it. "That feeling of unconditional love, I used to think it was so cheesy when people said that before, but it's something I finally understand."