Tyra BanksTyra BanksWhich star's flashing a big diamond rock on her ring finger?

She didn't try to hide it as she left a smart Hollywood restaurant...

With her boyfriend and entire family in tow.

Something to tell us, Tyra Banks?

The whole thing smacks of a celebratory lunch to our ever-beady eyes... but we could be wrong.

Tyra wore a YSL dress as she dined with her businessman boyfriend John Utendahl and a whole gaggle of relatives.

And that's some serious finger bling she's sporting as she tries to stroll nonchalantly off down the street.

The America's Next Top Model presenter has been dating her uber-successful boyf for over a year now.

Come on Ty, you can tell us - we won't tell anyone...

Meanwhile, let's take a look at how the beautiful one has shaped up over the years.