Marvin Humes' JLS bandmates turned up to his stag party wearing face masks of his fiancee.
The singer is set to wed The Saturdays star Rochelle Wiseman this summer and to celebrate the upcoming nuptials, Marvin and his pals have flown to Las Vegas.
As they arrived in the gambling mecca, his bandmates - Oritse Williams, J.B. Gill and Aston Merrygold - organised for everyone to wear masks with Rochelle's face on to start off the celebrations in style.
A source said: ''A bus pulled up to Las Vegas airport to take Marvin and nine of his closest mates up to their super-expensive hotel.
''When Oritse got on the bus he pulled out masks of Rochelle's face and passed them around for everyone to wear. Oritse then made a speech telling Marv to get used to Rochelle's beautiful face being around 24/7 once they're hitched.''
Oritse is in charge of the whole trip and has organised a strict timetable as well as lots of drinking and fun.
The source continued: ''The lads have brought along a bag of goodies to keep them entertained and embarrass Marv. They were passing round a huge bottle of Grey Goose vodka on the bus.
''They have also spoken to the hotel manager about having a pool party.''