Lindsay Lohan shares a racy bedtime photo on Instagram in lacy underwear and ...

By Alanna Lynott

PUBLISHED: 04:13 EST, 11 November 2013 | UPDATED: 04:35 EST, 11 November 2013

Lindsay Lohan shared a racy photo of herself on Sunday wearing lacy underwear and a tank top.

The 27-year-old actress took the black-and-white selfie with her cell phone with the help of a round mirror.

'Goodnight,' she wrote to her more than 538,000 followers on Instagram.

There have been rumours swirling around that Lindsay has been dating an 18-year-old model and she provided no help with another Instagram photo

The red-haired beauty kept her fans guessing and threw another potential beau into the mix by sharing a snap of designer Tal Cooperman alseep in bed via Instagram on Saturday.

'@tallywood haha #sleepingbeauty,' Lindsaywrote above the photograph.

The black and white picture showed the sleeping Tal resting on a mountain of pillows, covered by a white duvet.

And, despite appearing slept in, the space next to him lay conspicuously empty.

Tal, who is known to be a friend of Lindsay's ex Samantha Ronson, is an entrepreneur and a designer for the DCMA Collective, which he co-founded with Joel, Benji and Josh Madden.

On Friday night, Lindsay shared a selfie via her blog, saying: 'It's time for the weekend. sending love. fun. safety. blessings. xo -L'

Meanwhile, the troubled star, who left rehab three months ago, has reportedly been dating male model Morgan O'Connor, despite the fact he already has a girlfriend.

In addition, Lindsay was also spotted cosying up to the handsome Floyd Mayweather Jr at a Halloween party she hosted at Connecticut's Foxwoods Resort And Casino.

On Saturday, the Mean Girls actress also shared a photo of herself posing for photographer Tyler Shields' latest compilation The Dirty Side Of Glamour.

In the snap, Lindsay, who looks disheveled in a white dress, brandishes a blood soaked dagger as she leans on a dapperly dressed young man wearing a top hat.

In the background, another man lies like roadkill on the floor, his body sprawled across the white road-markings that decorate the tarmac.

It is said that Lindsay is currently risking the wrath of Oprah Winfrey, who is paying her a reported $2 million to document her path to sobriety for a shown on Oprah's OWN channel.

After reports surfaced that the Herbie Fully Loaded star had fallen off the wagon after her sixth rehab stay, that contract appears to now be in jeopardy.

An insider told Star Magazine: 'Oprah is footing the bill, and Lindsay brags about it. Oprah will be outraged when she finds out Lindsay is partying on her dime!'