Kate Gosselin picks her Kentucky Derby hat; Gaga goes R-rated in Mexico City

pp-gaga.jpg Must-see snapshots from the week that just was...

Friday: Lady Gaga (above) tones down her look to announce tour dates in Mexico City.

Meanwile, in Louisville, Ky., Kate Gosselin tried on Derby day hats at the Style Icon 2011 Luxury Gifting Suite at the Galt House.

pp-kate-gosselin.jpg Thursday: Jennifer Aniston poses with her new fragrance, 'Jennifer Aniston,' at a New York Sephora store.

pp-aniston.jpg Wednesday: Sophia Loren gets friendly with a life-sized Oscar statuette at the Academy of Motion Picture Arts and Sciences' tribute to, you guessed it, Sophia Loren.

pp-sophia.jpg Tuesday:Ginnifer Goodwin shows off a new 'do at the premiere of her new movie, "Something Borrowed," at Hollywood's Grauman's Chinese Theater.

pp-goodwin.jpg Monday: Actors Will Ferrell and John C. Reilly share a kiss courtside at the game between the Dallas Mavericks and the Los Angeles Lakers.

ff-reilly-ferrell.jpgAlso Monday, Jay-Z and wife Beyonce arrive at the annual Met Costume Institute gala. For more photos, take some time to look through our gallery from the evening's arrivals.

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Photo/Video credit: Getty Images