139th Kentucky Derby today, $1,000 mint julep being sold

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The 139th running of the Kentucky Derby is today.

More than 160,000 spectators are expected to attend.

Security is especially tight this year, due to the Boston marathon bombings.

All backpacks and coolers are now banned. Women with purses larger than 12-inches will not be allowed inside.

The traditional drink for the Kentucky Derby also got an upgrade.

Woodford Reserve of Versailles, Ky. is selling a limited number of mint juleps for $1,000 each.

Besides the usual mix of bourbon, spearmint leaves, water, and sugar, the drink comes in an engraved sterling-silver cup.

78 of the drinks have already been sold online.

Proceeds will go towards Old Friends, a facility for retired racehorses.