Trouble in paradise? Kylie Jenner looks tense as she picks up boyfriend Tyga from the airport in St Barts

Kylie Jenner was the dutiful girlfriend on Tuesday when she left her sisters to meet-up with boyfriend Tyga.

The 18-year-old reality star was seen picking up the 25-year-old rapper at St Barts airport during her family vacation to the Caribbean island.

However, instead of looking ecstatic during the reunion, the teen appeared tense as she exited the transport hub.