Dustin Milligan and AnnaLynne McCord in 90210 by Michael Desmond/The CW
The numbers are in, and the much-awaited/-hyped arrival of the new 90210 gave the CW its highest-rated premiere ever in the adults 18-49 demo.

In terms of total viewers, the sex-ucational adventures of Annie, Dixon, Naomi & Co. - with a bit of old-school Kelly, Nat and Brenda sprinkled in - averaged 4.9 million across its two-hour run. Those numbers represent a 40-percent better bow than Gossip Girl enjoyed a year ago.

Opposite the kids of West Bev, America's Got Talent (10 million viewers) slipped a mil, while Big Brother put up a typical 6.5 mil.

At 10 pm, the most-watched coverage of the Republican convention came courtesy of NBC, which drew 4.93 mil. - Matt Mitovich

Related:
" Read our recap of 90210's premiere
" Cheers & Jeers visits 90210