Wales' Six Nations Grand Slam celebrations have well and truly begun - with Warren Gatland filmed singing along to 'We are the Champions' on the team bus.

Saturday's thrilling 25-7 victory over Ireland marked the final Six Nations fixture of Gatland's tenure, and the third Grand Slam of his reign.

On what is sure to be an unforgettable night for the Wales camp, Gatland's daughter Gabby posted footage from a noisy Wales team bus - believed to be heading back to the Wales team hotel at the Vale Resort following the official post-match function.

Players can be heard in the background on the footage, with music blaring out as the celebrations get going.

In the short clip, the Wales boss can be seen singing along to Queen's smash hit "We are the champions" which is blaring out over the sound system.

Gatland's wife Trudi and daughter Gabby were both in attendance at Saturday's historic occasion.

Speaking in his post-match press conference, the Wales boss said: "The boys have to be back in their regions on Monday.

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"If I was a regional coach I’d be giving them Monday off!

"I think they’re going to enjoy themselves tonight and maybe tomorrow but they deserve that.

"They’ve worked their butts off in this campaign, we’ve pushed them hard."

Take a look at the dressing room celebration pictures with Prince William in the gallery below.

Inside the Wales dressing room after Six Nations Grand Slam win (Image: Huw Evans Picture Agency) View gallery

And the Wales boss is planning on savouring the achievement with his colleagues, too - cancelling a debrief next week to celebrate instead.

"We do a review after every campaign as a management team and go through the whole of what we’ve done.

"We’re meeting as a staff on Tuesday. I’ve cancelled that.

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"We’re meeting for lunch now and a long afternoon!"