Getting her sweat on! Red-faced Anne Hathaway rocks a ripped tank top after gruelling yoga class.

Anne Hathaway has gone from painfully skinny to taunt and toned and is not afraid to show off her results.

Looking fit as ever, a freshly showered Anne emerged from yoga on Thursday in Los Angeles, California.

The 30-year-old has been on a health kick recently and, if Thursday’s workout is anything to go on, the star is certainly taking things up a notch.

Time to work: Anne Hathaway hit the gym on Thursday in Los Angeles, California

The Les Miserables star managed to muster a smile as she left the gym after what appeared to be a hot, and grueling, yoga session.

The star hard worked out so hard that she had to change tops, as she entered the studio in a green tank but emerged in a torn up white tank.

Showing off her now much more sporty frame, the 30-year-old teamed the tank with a grey sports bra, a pair of tight black Lululemon leggings and a bring pink pair of trainers.

Happy it is over? The Les Miserables star managed to muster a smile as she left the gym after what appeared to be a hot, and grueling, yoga session

The alabaster skinned beauty went make-up free but threw on a pair of basic Ray Ban Wayfarers to protect her eyes.

After getting her sweat on, and with her hair finally growing out from her almost shaved look for Les Mis, Anne was forced to tie back her wet locks in a little half bun on the top of her head.

Anne has really been focusing on her fitness lately and was spotted on Wednesday braving Los Angeles still very warm summer weather to go for a mountain hike.

Show it off: The 30-year-old put her now more sportier frame on display in a torn up white tank, a grey sports bra, a pair of tight black Lululemon leggings and a bring pink pair of trainers

The Oscar-winner is no doubt preparing herself for some serious out of this world action as she will soon be pushing the boundaries of the space time continum.

Anne will soon start filming the sci-fi film Interstellar, directed by Christopher Nolan and co-starring Matthew McConaughey and Jessica Chastain.

Shooting in Canada and Iceland, the film is based on real scientific theories to explore what would happen if team of space travelers went through a worm hole.

Unusual ‘do: After getting her sweat on, and with her hair finally growing out from her almost shaved look for Les Mis, Anne was forced to tie back her wet locks in a little half bun on the top of her head

Anne has also just finished up a very special film Song One, which was produced by her husband of one year Adam Shulman.

In the drama, Anne plays an archaeologist who returns home from a dig to visit her injured brother, and strikes up a relationship with his favourite musician.

The film is set to be released in 2014.