Jennifer Aniston may be settling into her fifties but she still looks as toned as she did when she played Rachel Green on Friends.The 53-year-old siren proved this again when she shared several bikini photos from her last beach vacation with her pals, including her Horrible Bosses co-star Jason Bateman.In one image, the ex-wife of Brad Pitt was seen laying on her tummy on the shore and in another she can be seen from the back as she walks. Beach bunny: Jennifer Aniston may be settling into her fifties but she still looks as toned as she did when she played Rachel Green on Friends.