Paris Hilton partied up with DJ Afrojack in New Year at Miami

More than friends: Paris Hilton tweeted a picture of herself with DJ Afrojack last night as they saw in New Year in Miami

They are supposedly just good friends.

But it looks like things may have heated up between Paris Hilton and Dutch music producer DJ Afrojack.

The 30-year-old heiress partied up a storm in Miami last night while Afrojack - real name Nick van de Wall - took to the decks at the W South Beach hotel.

A source told MailOnline the pair were smooching and kissing throughout the evening and also shared a VIP penthouse suite.

Earlier in the night they dined at The Dutch restaurant inside W South Beach, along with Paris's sibling Nicky and Baron Hilton and 24-year-old Afrojack's management team.

Tweet nothings: Paris took to Twitter to tell her fans about her busy night

An onlooker said: 'Hilton and Afrojack sat next to each other, holding hands and stealing kisses throughout dinner.'

Setting tongues wagging: The pair were apparently stealing kisses throughout the night as Afrojack took to the decks at the W South Beach hotel

They then moved outside to WET, the poolside NYE bash that Afrojack headlined.

Paris held court at a VIP table, stocked with five bottles of champagne, four bottles of Grey Goose vodka and a bottle of tequila. 

An onlooker said: 'Shortly before midnight, Paris went up on stage with Afrojack to lead the crowd in a New Year's countdown. 

'They both kissed at midnight in front of the entire crowd.'

Paris had a busy night last night, tweeting today: 'Had the best New Years Eve ever! @DJAfrojack at The W then @TheRealIngrosso at @LIVMiami then to after party at @IamDiddy's house. So fun!:)'

Legs on show: Paris was joined by her sister Nicky with the sisters both showing off their pins in short glittering ensembles

In the frame: Paris had earlier dined with Afrojack and some of her family before they partied the night away

Paris has been setting tongues wagging recently about he relationship with Afrojack.

She was also with him earlier this week at Surrender Nightclub at Encore in the Wynn Resort, Las Vegas.

That's hot! Seen here earlier this week partying at a gig headlined by the Dutch music producer in Las Vegas wearing 'I "heart" Dj Afrojack' glasses