Team USA "all day!" Zac Efron shared a courtside selfie as he cheered on American athletes in Rio.
Photo: Instagram/@zacefron
2/13
Greetings from Rio! Actress Camilla Belle shared a snap of herself on Facebook hanging on the beach in Brazil.
Photo: Facebook/CamillaBelle
3/13
New parents Eddie Redmayne and Hannah Bagshawe left daughter Iris behind to attend the Men's 100m breaststroke competition in Rio.
Photo: Pascal Le Segretain/Getty Images
4/13
Country group The Band Perry performed at the USA House during the Olympics. During a Facebook Live session the group said that the gig is "the best party in Rio."
Photo: Harry How/Getty Images
5/13
Alright, alright, alright — go team USA! Matthew McConaughey excitedly watched a swim session at the Olympic Aquatics Stadium.
Photo: Clive Rose/Getty Images
6/13
Matthew McConaughey and wife Camila Alves might be rooting for different countries, but the cute the couple made time to cheer together during the swimming finals on the sixth day of the Olympics.
Photo: Jean Catuffe/Getty Images
7/13
A dream come true! Zac Efron surprised the Final Five, USA's women's gymnastics team in Rio.
Photo: Instagram/@todayshow
8/13
Elizabeth Banks hung out with gold medalist USA swimmer Missy Franklin in Rio.
Photo: Instagram/@elizabethbanks
9/13
Victoria's Secret Angel Alessandra Ambrosio got into the Olympic spirit with her daughter Anja and son Noah Mazur.
Photo: Instagram/@alessandraambrosio
10/13
Brazilian beauty Gisele Bundchen strut her stuff during the Opening Ceremony of the 2016 Olympics.
Photo: FRANCK FIFE/AFP/Getty Images
11/13
Check out his bling! Adriana Lima posed with USA swimmer Chase Kalisz and his silver medal on the set of the Today show.
Photo: Harry How/Getty Images
12/13
Leslie Jones and her stylist were decked out in patriotic colors as they cheered on Team USA in Rio.
Photo: Instagram/@lesdogggg
13/13
Ryan Seacrest was ready to dive in the pool with his personalized swimmer's cap as he struck a pose with Dana Vollmer and her medals.
Photo: Instagram/@ryanseacrest