Kylie Jenner and Travis Scott are mega-wealthy one percent-ers – she’s the world’s youngest ‘self-made’ billionaire, and don’t you forget it.

So it’s no wonder the couple loves to shower each other with extravagant gifts, whether it’s for Christmas, Valentine’s Day or their birthdays.

Rapper Scott turns 27 on April 30, and Kylie made sure it was a birthday he’ll never forget by plastering a message to the Sicko Mode artist on a Los Angeles billboard.

The enormous poster in West Hollywood features a picture of their daughter, Stormi, another image of Kylie and Stormi together, and the message:

“Happy birthday daddy, Love, Mommy & Stormi xo.”

Kylie and Travis are increasingly running out of room to move, in terms of one-upping each other’s over-the-top gestures. Scott serenaded Kylie on-stage at one of his concerts last year, and sent her 443 roses after Stormi was born – because the baby arrived at 4.43 AM. And who could forget that Ferrari push present.