October 20, 2007 10:00 AM

Schemidt/AFP/Getty;Jon Kopaloff/FilmMagic; Dara Kushner/INF

In the past week, we’ve seen some heavy-hitting stars step out in surprisingly similar purple strapless dresses. Eva Longoria hit a Vogue event in Mexico City in her lilac Oscar de la Renta, while Natalie Portman honored Julia Roberts at an American Cinematheque gala in Lanvin and LeAnn Rimes dropped by The Late Show in her wool Alexander McQueen minidress. This is one of those great versatile trends — more interesting than the standard little black dress, but still utterly wearable and transformable with accessories. Here are a few of our favorites online, all for less than $58!

Ruby Rox Satin Bubble Dress, $58 at nordstrom.com

Johnny Martin Tube Dress with Ruffle Hem, $58 at macys.com

Isaac Mizrahi for Target Strapless Dress in Milan Purple, $40 at target.com

Tube Bra Top Dress, $38 at victoriassecret.com

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