Chelsea Handler strips to wish Maria Sharapova a happy birthday

Actress and TV personality Chelsea Handler has stripped off again to wish pal Maria Sharapova a happy birthday.

The funny girl constantly tests Instagram's decency rules by baring all in photos she posts on the app, covering up just enough to keep the saucy shots online.

And when her pals celebrate their birthdays, she often poses naked to wish them the very best.

Last month (Mar16), she posted a nude selfie to wish Reese Witherspoon a happy birthday, and the 41-year-old comedienne stripped off again on Tuesday (19Apr16) to mark tennis ace Maria's 29th.

She added the caption: "Happy birthday to my bear @mariasharapova. Sending love from me and my bonsai."

Chelsea covered her breasts with a carefully placed arm and held a plant to cover her private parts.

She sent the selfie from Tokyo, Japan, where she's filming her upcoming Netflix series.