But this is one addiction we can totally get behind -- especially if she's flashing a little cleavage every time!

Lindsay Lohan is still enjoying her European vacation with her sister Aliana, and while she's set to make her London stage debut in David Mamet's Speed-the-Plow on September 24, it doesn't appear as though she's booked any other gigs in the meantime.

Lohan may not be starring in many movies lately, but former Mean Girls co-star Rachel McAdams sings the starlet's praises in the August issue of Allure. "If anything, I was in awe of her talent,” she says. “I looked at her as this experienced actor, and she had great comedic timing, so natural.

Director Mark Waters recently told Vulture that Lohan was “very shy” when working with McAdams, who was “older and a very accomplished actress ... She'd come in the room and not talk to Lindsay — she was very focused. Lindsay kind of got nervous around her, and I thought that, more than anything, was going to be the deciding factor, the fact that she affected Lindsay in that way." McAdams insists that wasn't the case. “It’s just funny to hear that because you never know what people are thinking,” she mused. “We all try to act like we’ve got it together.”