Alanis Morissette, Ellen DeGeneres dressed up like Taylor Swift

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Ellen DeGeneres Joins Taylor Swift Onstage

So far, everyone from Kobe Bryant to Julia Roberts has made a cameo appearance on TaylorSwift's 1989 World Tour (including her infamous girl squad -; because duh). At her L.A. concert last night, Swift added to her long list of increasingly random-seeming guests (MattLeBlanc? OK.) by inviting EllenDeGeneres and AlanisMorissette to join her onstage at the Staples Center.

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Both Morissette (who dueted on "You Oughta Know" with CalvinHarris' main boo thang) and DeGeneres dressed for the occasion -; meaning they matched the pop star in similarly skintight outfits.

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Morissette introduced a whole new generation to her angsty ballad while clad in leather pants, chunky black boots and a black blazer, standing alongside Swift, who wore a black leather jumpsuit.

PHOTOS: All the incredible photos from Taylor's 1989 tour

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Taylor Swift's 1989 tour
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Alanis Morissette, Ellen DeGeneres dressed up like Taylor Swift
NASHVILLE, TN - SEPTEMBER 26: Singer/songwriters Taylor Swift (L) and Mick Jagger perform onstage during The 1989 World Tour live in Nashville at Bridgestone Arena at Bridgestone Arena on September 26, 2015 in Nashville, Tennessee. (Photo by John Shearer/LP5/Getty Images for TAS)
CHICAGO, IL - JUNE 03: Taylor Swift and Mick Jagger perform at the United Center on June 3, 2013 in Chicago, Illinois. (Photo by Paul Natkin/Getty Images)
SANTA CLARA, CA - AUGUST 15: (L-R) Taylor Swift, musician Joan Beaz and actress Julia Roberts take a bow on stage during Swift's 'The 1989 World Tour' at Levi's Stadium on August 15, 2015 in Santa Clara, California. (Photo by John Medina/LP5/Getty Images for TAS)
LOS ANGELES, CA - AUGUST 24: Singer-songwriters Alanis Morissette (R) and Taylor Swift perform onstage during Taylor Swift The 1989 World Tour Live In Los Angeles at Staples Center on August 24, 2015 in Los Angeles, California. (Photo by Christopher Polk/TAS/Getty Images for TAS)
LOS ANGELES, CA - AUGUST 24: Singer-songwriters Alanis Morissette (L) and Taylor Swift perform onstage during Taylor Swift The 1989 World Tour Live In Los Angeles at Staples Center on August 24, 2015 in Los Angeles, California. (Photo by Christopher Polk/TAS/Getty Images for TAS)
LOS ANGELES, CA - AUGUST 24: Singer-songwriter Taylor Swift performs onstage during Taylor Swift The 1989 World Tour Live In Los Angeles at Staples Center on August 24, 2015 in Los Angeles, California. (Photo by Christopher Polk/TAS/Getty Images for TAS)
LOS ANGELES, CA - AUGUST 24: Singer-songwriters Taylor Swift (L) and Natalie Maines of the band Dixie Chicks perform onstage during Taylor Swift The 1989 World Tour Live In Los Angeles at Staples Center on August 24, 2015 in Los Angeles, California. (Photo by Christopher Polk/TAS/Getty Images for TAS)
LOS ANGELES, CA - AUGUST 24: Singer-songwriters Taylor Swift (L) and Natalie Maines of the band Dixie Chicks perform onstage during Taylor Swift The 1989 World Tour Live In Los Angeles at Staples Center on August 24, 2015 in Los Angeles, California. (Photo by Christopher Polk/TAS/Getty Images for TAS)
LOS ANGELES, CA - AUGUST 24: Singer-songwriter Taylor Swift (L) and comedian Ellen DeGeneres perform onstage during Taylor Swift The 1989 World Tour Live In Los Angeles at Staples Center on August 24, 2015 in Los Angeles, California. (Photo by Christopher Polk/TAS/Getty Images for TAS)
LOS ANGELES, CA - AUGUST 24: Singer-songwriter Taylor Swift (L) and comedian Ellen DeGeneres perform onstage during Taylor Swift The 1989 World Tour Live In Los Angeles at Staples Center on August 24, 2015 in Los Angeles, California. (Photo by Christopher Polk/TAS/Getty Images for TAS)
LOS ANGELES, CA - AUGUST 24: Singer-songwriter Taylor Swift (L) and comedian Ellen DeGeneres perform onstage during Taylor Swift The 1989 World Tour Live In Los Angeles at Staples Center on August 24, 2015 in Los Angeles, California. (Photo by Christopher Polk/TAS/Getty Images for TAS)
FOXBORO, MA - JULY 25: Singer Taylor Swift performs at Gillette Stadium on July 25, 2015 in Foxboro, Massachusetts. (Photo by Michael Loccisano/Getty Images for TAS)
FOXBORO, MA - JULY 25: Singer Taylor Swift performs at Gillette Stadium on July 25, 2015 in Foxboro, Massachusetts. (Photo by Michael Loccisano/Getty Images for TAS)
Singer Taylor Swift performs during her "1989" world tour at MetLife Stadium in East Rutherford, N.J., on Friday, July 10, 2015. (Photo by Evan Agostini/Invision/AP)
Singer Taylor Swift performs during her "1989" world tour at MetLife Stadium in East Rutherford on Friday, July 10, 2015, in New Jersey. (Photo by Evan Agostini/Invision/AP)
Singer Taylor Swift performs during her "1989" world tour at MetLife Stadium on Saturday, July 11, 2015, in East Rutherford, New Jersey. (Photo by Charles Sykes/Invision/AP)
Singer Taylor Swift performs during her "1989" world tour at MetLife Stadium on Saturday, July 11, 2015, in East Rutherford, New Jersey. (Photo by Charles Sykes/Invision/AP)
AMSTERDAM, NETHERLANDS - JUNE 21: Taylor Swift performs in The 1989 World Tour at Ziggo Dome on June 21, 2015 in Amsterdam, The Netherlands. (Photo by Michel Porro/Getty Images for TAS)
PHILADELPHIA, PA - JUNE 13: Taylor Swift performs onstage during The 1989 World Tour on June 13, 2015 at Lincoln Financial Field in Philadelphia, Pennsylvania. (Photo by Dimitrios Kambouris/Getty Images for TAS)
COLOGNE, GERMANY - JUNE 20: Taylor Swift performs live on stage during 'The 1989 World Tour' night 2 at Lanxess Arena on June 20, 2015 in Cologne, Germany. (Photo by Sascha Steinbach/Getty Images for TAS)
MANCHESTER, ENGLAND - JUNE 24: Taylor Swift performs at Manchester Arena on June 24, 2015 in Manchester, England. (Photo by Shirlaine Forrest/Getty Images for TAS)
GLASGOW, SCOTLAND - JUNE 23: Taylor Swift performs at The SSE Hydro on June 23, 2015 in Glasgow, Scotland. (Photo by Ross Gilmore/Getty Images for TAS)
DUBLIN, IRELAND - JUNE 29: Taylor Swift brings The 1989 World Tour to 3Arena on June 29, 2015 in Dublin, Ireland. (Photo by Carrie Davenport/Getty Images for TAS)
COLOGNE, GERMANY - JUNE 20: Taylor Swift performs live on stage during 'The 1989 World Tour' night 2 at Lanxess Arena on June 20, 2015 in Cologne, Germany. (Photo by Sascha Schuermann/Getty Images for TAS)
COLOGNE, GERMANY - JUNE 19: Taylor Swift performs during 'The 1989 World Tour' night 1 at Lanxess Arena on June 19, 2015 in Cologne, Germany. (Photo by Sascha Steinbach/Getty Images for TAS)
AMSTERDAM, NETHERLANDS - JUNE 21: Taylor Swift performs in The 1989 World Tour at Ziggo Dome on June 21, 2015 in Amsterdam, The Netherlands. (Photo by Michel Porro/Getty Images for TAS)
MANCHESTER, ENGLAND - JUNE 24: Taylor Swift performs at Manchester Arena on June 24, 2015 in Manchester, England. (Photo by Shirlaine Forrest/Getty Images for TAS)
GLASGOW, SCOTLAND - JUNE 23: Taylor Swift performs at The SSE Hydro on June 23, 2015 in Glasgow, Scotland. (Photo by Ross Gilmore/Getty Images for TAS)
BATON ROUGE, LA - MAY 22: Taylor Swift performs on stage during 'The 1989 World Tour' at LSU Tiger Stadium in Baton Rouge, LA on May 22, 2015. (Photo by Christopher Polk/Getty Images for TAS)
COLOGNE, GERMANY - JUNE 19: Taylor Swift performs during 'The 1989 World Tour' night 1 at Lanxess Arena on June 19, 2015 in Cologne, Germany. (Photo by Sascha Steinbach/Getty Images for TAS)
COLOGNE, GERMANY - JUNE 20: Taylor Swift performs live on stage during 'The 1989 World Tour' night 2 at Lanxess Arena on June 20, 2015 in Cologne, Germany. (Photo by Sascha Schuermann/Getty Images for TAS)
COLOGNE, GERMANY - JUNE 20: Taylor Swift performs live on stage during 'The 1989 World Tour' night 2 at Lanxess Arena on June 20, 2015 in Cologne, Germany. (Photo by Sascha Schuermann/Getty Images for TAS)
AMSTERDAM, NETHERLANDS - JUNE 21: Taylor Swift performs in The 1989 World Tour at Ziggo Dome on June 21, 2015 in Amsterdam, The Netherlands. (Photo by Michel Porro/Getty Images for TAS)
PHILADELPHIA, PA - JUNE 12: Taylor Swift performs onstage during The 1989 World Tour on June 12, 2015 at Lincoln Financial Field in Philadelphia, Pennsylvania. (Photo by Dimitrios Kambouris/Getty Images for TAS)
MANCHESTER, ENGLAND - JUNE 24: Taylor Swift performs at Manchester Arena on June 24, 2015 in Manchester, England. (Photo by Shirlaine Forrest/Getty Images for TAS)
BOSSIER CITY, LA - MAY 20: Taylor Swift performs on stage for the 1989 World Tour at CenturyLink Center on May 20, 2015 in Bossier City, Louisiana. (Photo by Christopher Polk/Getty Images for TAS)
PHILADELPHIA, PA - JUNE 13: Taylor Swift performs onstage during The 1989 World Tour on June 13, 2015 at Lincoln Financial Field in Philadelphia, Pennsylvania. (Photo by Dimitrios Kambouris/Getty Images for TAS)
COLOGNE, GERMANY - JUNE 19: Taylor Swift performs during 'The 1989 World Tour' night 1 at Lanxess Arena on June 19, 2015 in Cologne, Germany. (Photo by Sascha Steinbach/Getty Images for TAS)
COLOGNE, GERMANY - JUNE 19: Taylor Swift performs during 'The 1989 World Tour' night 1 at Lanxess Arena on June 19, 2015 in Cologne, Germany. (Photo by Sascha Schuermann/Getty Images for TAS)
GLASGOW, SCOTLAND - JUNE 23: Taylor Swift performs at The SSE Hydro on June 23, 2015 in Glasgow, Scotland. (Photo by Ross Gilmore/Getty Images for TAS)
PHILADELPHIA, PA - JUNE 12: Taylor Swift performs onstage during The 1989 World Tour on June 12, 2015 at Lincoln Financial Field in Philadelphia, Pennsylvania. (Photo by Dimitrios Kambouris/Getty Images for TAS)
DETROIT, MI - MAY 30: Taylor Swift performs on stage during the 1989 World Tour Live at Ford Field on May 30, 2015 in Detroit, Michigan. (Photo by Larry Busacca/Getty Images for TAS)
COLOGNE, GERMANY - JUNE 19: 'TS' letters are seen during the 'Taylor Swift The 1989 World Tour' night 1 at Lanxess Arena on June 19, 2015 in Cologne, Germany. (Photo by Sascha Steinbach/Getty Images for TAS)
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But the real showstopper of the evening was DeGeneres, who made her glittering onstage debut in a sequined jumpsuit, which she paired with a fringed, hula-esque tutu skirt. The Ellen host and lifestyle-brand pioneer topped the sparkly look like any fashionista would -; with plain white sneakers, of course.

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Though it's a tough call, we'd have to say that, in this case, DeGeneres really wore it best.

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