LiLo held a party for the Toronto International Film Festival last night, Friday, September 12th.

Ronson was taking care of deejay business, while Lindsay hosted a party at Ultra Supper Club, dressed in her recently signature look - a sheer grey top and black leggings.  In case you didn’t already know, Lindsay’s got a new line of leggings out on the market; some flashy and some complete with knee pads.

Hmm, I wonder if one night while getting low at the clubs, Lindsay thought to herself, “Ouch… I could get even lower and dirtier if I only had knee pads.”

Anyway, she’s still denying rumors that she is engaged to Ronson, even though she was sporting huge heart-shaped diamond ring on THE finger.  A rep for Lohan claims, “She bought it herself.  It’s an antique ring that she found at an antique store in NYC.”

Regardless, with all the time they spend together and public displays of affection, it’s no secret that the two are a very close and serious couple. In fact, according to the Daily Star earlier this week, Ronson told a crowd at a party in Los Angeles she was deejaying, “By the end of this year, my love will be Mrs Ronson.”