Lindsay Lohan has admitted that she has broken her sobriety since her last visit to rehab.

The wayward actress, 27, has been documenting her struggle to stay on the straight and narrow in a documentary series for Oprah Winfrey's TV network in the US.

And a clip from the next episode sees her life coach questioning Li-Lo on the issue.

The star explains: "I rushed into a relationship .. and I jumped right into a relationship where we weren't on the same page.

"I wasn't considering the fact that the person I was seeing does drink and yeah. ... I had some wine.

"It's OK to admit it. ... It's really scary. ... It took me a bit to realise, but then I thought, why am I holding this in?

"Yeah, f**k it, I screwed up and that's OK."

She is seen getting shirty with her life coach, AJ Johnson, in the clip - saying: "I thought we were friends, why are you asking me this on camera?"

But the pair wrap up on good terms - and E! News reports that Li-Lo has been successful in her attempt to stay sober recently.

She is claimed to have been attending Alcoholics Anonymous meetings each day and a source said: "She has been really good lately."