‘The Hills' Returns With Season Four & Heidi Drops New Single

Lauren, Heidi, Audrina and Lo — along with Brody, Spencer and a new man in LC’s life — are back for another season of the MTV’s addictive reality show, “The Hills,” debuting tonight.

A new season brings new shot at love for series star Lauren Conrad, who goes on a date with Baltimore Orioles baseball player Doug Reinhardt in the premier episode.

Never letting anyone steal the spotlight, Lauren’s frenemy, Heidi Montag, celebrated the new season of “The Hills,” with the release of a new single, “Overdosin’.”

[ First Look: ‘The Hills’ Season 4 Preview - Play it Now ]

“Overdosin’” is about “when you fall in love with someone… and [you’re] just overdosing off of their love,” Heidi told Ryan Seacrest Monday morning when she stopped by “On Air With Ryan Seacrest” on LA’s KIIS-FM.

Heidi’s not the only one overdosing on love. Fans of the hit reality show are watching in huge numbers. Season three gave the cable network its biggest numbers since 2004’s “Real World: San Diego.”

’‘I would go out on a limb and say this is probably the biggest show we’ve ever had,’’ MTV Networks’ president of entertainment, Brian Graden, told Entertainment Weekly in July.

[ All Access: The Hills - Audrina Patridge - TV - Heidi Montag - Reality TV ]

Will Lauren pick Doug over Brody? Will Heidi and Spencer ever settle their feud with Lauren? Will Audrina move out of the house she’s sharing with Lauren and Lo? Let the drama begin on an all-new season!

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