Nicole Scherzinger Nicole Scherzinger Nicole Scherzinger is on a high.

What's got her so darn thrilled?

It's all to do with her fella, Lewis Hamilton.

The bootilicious babe had her pout to the fore this weekend as Lewis became the youngest ever Formula One world champion at just 23.

As he rammed his way to the finishing line, a sizzlin' Nicole, 30, was behind him every step of the way.

In fact, the Pussycat Dolls babe was throwing some rather strange facial expressions as she celebrated Lewis' triumph, which was completed at the Interlagos circuit in Sao Paulo, Brazil.

But hey - maybe she was just blown away by the excitement of it all...

And it was clear from her jubilant presence at the track that things are really getting serious between the showbiz duo.Lewis Hamilton, his family and Nicole Scherzinger Lewis Hamilton, his family and Nicole Scherzinger

Not only was Nicole giving it her all from the audience stand - she also joined Lewis and his rellies for a close family celebration afterwards.

Once more, she was still holding her finger up - meaning Formula one? Coming first? Or perhaps, "Don't get any ideas, ladies, he may be world champion but I'm his number one gal"?

Congrats to you and Lewis, Nicole - and long may your racy ride together continue.