If New York City felt a bit more glam this week, it's because Adam Lambert's glittery GlamNation tour, which began earlier this month, just wrapped a two-night stop in the Big Apple.

Opening for Lambert on tour is fellow 'Idol' season 8 alumna and fourth-place finisher Allison Iraheta, as well as Aussie guitarist Orianthi.

On both nights, Iraheta's sets were filled with high energy, kneeling and belting; the girl gave it her all. Unfortunately, the crowd of Glamberts (moreso on Tuesday night) didn't elicit the enthusiastic response that she deserved, probably because they were impatient for Lambert to come out on stage. It's always tough being an opener, but when the fans are this fanatical for the main event, it's hard for them to muster enthusiasm for anyone else.

Iraheta's vocals were big, definitely beyond her 18 years, and she easily out-shined Orianthi, who, while a great guitar player, has no stage presence and just one catchy song: her single, 'According to You.'

Orianthi actually seemed to do best as just the guitar soloist as she played off Iraheta's energy during her performance of her new single, 'Don't Waste The Pretty.' (Buy it on iTunes! You will not regret it!)

Those who watched 'Idol' know that Lambert is a consummate performer, and this show is no exception. There are multi-colored lasers, sparkly outfits, stage-kissing antics and barely clothed dancers. But most importantly, there's also some crazy-good singing.

Semi-disappointingly, Lambert keeps his show at around a PG-13 rating, when everything about his songs, costumes and persona begs for a much raunchier concert. There's also an acoustic breakdown mid-show that, though good, kind of kills the mood just as the audience is getting amped up. Still, Lambert put on an incredible show, and proved there's at least one pop star out there who can actually sing.

It's also a rare treat for 'Idol' fans to get to see two of their favorites perform their own unique, magical sets on the same tour. Considering how lackluster season 9 proved to be, watching Iraheta and Lambert belt their hearts out at GlamNation was like, well, music to an 'Idol' fans' ears.

Fans can check out Lambert, Iraheta (and sure, even Orianthi) on the remaining GlamNation tour dates, listed here.

Side note: This reporter also ran into SomethingPitchy podcast favorites like MTV's Jim Cantiello (on both nights!) and Rickey from Rickey.org. (Read their coverage here and here.)

For more 'American Idol' coverage and news, follow us @somethingpitchy on Twitter.

You can also watch this VH1 clip from last night's show (which contains some boy-on-boy lip-lockin'. Oh my!)

Adam Lambert Performs 'Fever' at the Nokia in NYC

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