Celeb Spotter 019: Hilary Swank rocks a mini skirt and Gigi Hadid goes incognito

Hilary Swank turns heads in a sexy mini skirt, Gigi Hadid goes stylishly incognito and Hailey Baldwin stuns in a slinky slip dress in some of our favorite celebrity sightings from this week.

SEE ALSO: Dakota Johnson steps out with younger sisters Stella, 20, and Grace, 17 in Italy

More notable spottings came from Justin Theroux, who rocked some on-trend tinted red sunglasses, and Bella Hadid and Winnie Harlow, who partied together at the Bootsy Bellows Pop Up in Monaco.

Justin Bieber was also spotted out and about with pal Patrick Schwarzenegger in SoHo. Schwarzenegger appeared to be cracking Bieber's back as he embraced him from behind, but we're really not sure what was going on there. They also made waves during their surprise visit to a vineyard in the Hamptons.

See our favorite celebrity sightings from this week in the gallery below:

30 PHOTOS
Celeb Spotter 019: Hilary Swank, Gigi Hadid and Hailey Baldwin
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Celeb Spotter 019: Hilary Swank, Gigi Hadid and Hailey Baldwin
Kendall Jenner donned a bizarre, plunging ensemble that she paired with a Louis Vuitton fannypack in NYC. (Photo by Ignat/Bauer-Griffin/GC Images)

Hilary Swank showed off her toned legs in a black mini skirt during her AOL Build appearance.

(Photo by Gotham/GC Images)

Rachel Weisz was the epitome of glamour in NYC. (Photo by Gotham/GC Images)
Nick Jonas gave the paparazzi a wave while out in London. (Photo by Neil Mockford/GC Images)

Former "Bachelorette" star Andi Dorfman stepped out for Malibu's rooftop party at Tiki Tabu to celebrate 101 Days of #BecauseSummer.

(Credit: Getty for Malibu Rum)

Gigi Hadid went incognito while out and about in NYC this week. (Photo by Raymond Hall/GC Images)
Rihanna irocked this plunging look while out in Los Angeles. (Photo by Pressphotobank/Bauer-Griffin/GC Images)
Justin Bieber and Patrick Schwarzenegger were spotted undetected in SoHo this weekend doing...we're not sure what. (Photo by Robert Kamau/GC Images)
Hailey Baldwin rocked a gold satin slip dress while running around in NYC on Memorial Day. (Photo by Robert Kamau/GC Images)
Gigi Hadid was all about the red-and-black this week. (Photo by Gotham/GC Images)
Justin Theroux donned some trendy, tinted sunnies for his "Good Morning America" appearance. (Photo by Gotham/GC Images)
Kendall Jenner donned a sheer shirt and another fannypack, channeling a chic soccer mom this week. (Photo by Raymond Hall/GC Images)
Fifth Harmony stars Lauren Jauregui, Normani Kordei and Ally Brooke stepped out on the Lower East Side. (Photo by Gotham/GC Images)

Bella Hadid and Winnie Harlow partied at The h.wood Group's Bootsy Bellows Grnd Prix Pop Up, which was produced by John Terzian and Brian Toll, at the VIP Room in Monaco, France this week.

(Credit: The h.wood Group)

Zac Efron did his best prayer-hands-emoji imitation in London. (Photo by Neil Mockford/GC Images)
Brooke Shields carried her own heels and opted for something a little more comfortable while out in NoHo. (Photo by Josiah Kamau/BuzzFoto via Getty Images)

Mac Miller helped Mtn Dew and Taco Bell surprise fans with the ultimate trip to Las Vegas, celebrating the launch of Mtn Dew Spiked Lemonade.

(Credit: Mountain Dew)

Country singer Lee Brice honored the troops with a performance at the first-ever Budweiser "Salute to Service" concert to support Folds of Honor in Charleston, South Carolina.

(Credit: Budweiser)

Paris Hilton and boyfriend Chris Zylka matched their outfits once again in all-black ensembles. (Photo by Hollywood To You/Star Max/GC Images)
Back from Cleveland? Khloe Kardashian carried a massive blanket and a Birkin bag at LAX. (Photo by starzfly/Bauer-Griffin/GC Images)
Fifth Harmony ex-pat Camila Cabello stopped by BBC Radio 1 in London. (Photo by SAV/GC Images)
Niall Horan performed his catchy new single, "Slow Hands," on the "Today" show this week. (Photo by DVT/Star Max/GC Images)
Gigi Hadid rocked this old school style while making the rounds in NYC. (Photo by Raymond Hall/GC Images)
Ellie Goulding took selfies with fans waiting outside of BBC Radio One. (Photo by Neil Mockford/GC Images)
Leona Lewis rocked an unfortunate look while out and about in LA. (Photo by BG002/Bauer-Griffin/GC Images)
Kim Kardashian's best friend, Jonathan "Food God" Cheban, stepped out in Los Angeles this week. (Photo by SMXRF/Star Max/GC Images)
Matt Bomer kept it casual in camo while grabbing coffee. (Photo by SMXRF/Star Max/GC Images)
Margot Robbie rocked a sexy leather ensemble at LAX. (Photo by starzfly/Bauer-Griffin/GC Images)
Arnold Schwarzenegger was all smiles while out and about in LA. (Photo by BG004/Bauer-Griffin/GC Images)
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More from AOL.com:
Celeb Spotter 018: Kourtney Kardashian and Kendall Jenner heat up Cannes
Celeb Spotter 017: Bella Hadid, Emily Ratajkowski and Hailey Baldwin head to Cannes
Celeb Spotter 016: Ashley Graham, Gisele Bundchen and J.Rod step out solo

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