Katherine Webb & AJ McCarron Are Engaged

She turned heads in the stands when she was cheering her college football superstar boyfriend, AJ McCarron. Now Katherine Webb will be turning heads because of the huge bling he put on her ring finger Friday night!

'WE'RE ENGAGED!!!" the former Miss Alabama tweeted along with a pic of her huge sparkler and another of her hugging her groom-to-be

McCarron was playing quarterback for the University of Alabama when sportscaster Brent Musburger spotted the sexy Webb in the stands. A long, lingering camera shot of her had the whole country talking.

Webb quickly landed her a TV commercial and was a contestant on the diving show, Splash.

Of her splashing new piece of jewelry, Webb says, McCarron "designed it himself."