By Melony Roy

By Melony Roy

PHILADELPHIA (CBS) — Nearly two thousand millennials are in Philadelphia this week for the Forbes Under 30 Summit, a gathering of young entrepreneurs and game changers.

The three-day summit highlights successful twenty something’s from the worlds of technology, science, sports, food and entertainment.

Activist Monica Lewinsky will return to discuss her new campaign to end cyberbullying.

Kelly Osbourne will interview YouTube personality Michelle Phan on how over-sharing can translate into millions.

The summit will also feature the Winklevoss twins on the future of Bitcoins, the founder of credit card processing startup stripe, Tinder’s Sean Rad, and Dr. Ruth.

There will be a $1-million competition for social entrepreneurs to pitch their ideas to address global challenges.

Among some of the events at the sold out conference is the “Under 30 Rocky Run” on Tuesday morning along the Ben Franklin Parkway and up the Art Museum step, led by members of the U.S. Woman’s Soccer team.

There are also some events open to the public.

On Tuesday night, Rapper A$AP Rocky will headline the free “Under 30 Music Festival” at Festival Pier.

Concert tickets are available here: