Christina Applegate's daughter loves cleaning.

The 'Up All Night' actress joked her 22-month-old daughter Sadie is a mother's dream because she is obsessed with keeping things tidy and the besotted mother admitted she could watch Sadie play all day.

Writing in her blog for People magazine, she said: ''She loves to clean, and use her broom -- and this is without any encouragement from me! A mother's dream, right?

''Sadie can play in her outside playhouse for hours on end, and I could watch her play for just as long. It really is beautiful to see her engaging in such imaginative play. We keep a set of play teapots and teacups and she loves sharing her fake tea. She also loves to make soup -- except her pronunciation isn't so great, and she seems to prefer calling it ''poop''!''

Christina also revealed she and fiance Martyn LeNoble are fascinated to see how Sadie's personality is developing.

She said: ''One of the best parts about having a child is watching them develop their own very special personality. I love watching Sadie continue to grow and play -- it seems as though every single day she is discovering something new!

''There are certain moments where Sadie's personality really shines through. I am completely entertained -- enthralled even -- watching her play.''