Lindsay Lohan has set her sights on Coldplay bassist Guy Berryman.

The 'Mean Girls' star reportedly made her romantic intentions towards the 33-year-old British musician clear at Lollapalooza music festival in Chicago where she was spotted "following him around all weekend" and attended the band's Grey Goose after-party following their performance on Friday (05.08.11), the New York Post newspaper reports.

The concert in Chicago was Lindsay's second time seeing the band last week as she was a special guest of frontman Chris Martin at their Los Angeles gig on Wednesday.

The 25-year-old actress is a huge fan of the British rockers and reached out to Chris for tickets as the pair have been "good friends" for years.

Lindsay - who brought her younger sister Ali to the gig, where they enjoyed prime seats near the stage - later tweeted: "I love Coldplay!!!!!!!!!!!!!!!!! W/my sis :) (sic)"

However, she reportedly later "threw a fit" when she was refused a backstage pass with a source explaining: "When Lindsay was told she wasn't allowed backstage because her pass didn't allow it, she threw a complete fit.

"She protested to the people running the guest list, hoping they'd change their minds but it was still a firm 'no'.

"She got even more angry when she found out fellow actress Kate Bosworth was there mingling with Chris' wife Gwyneth Paltrow and the band.

"In the end she got so fed up, she stormed out."